Let The Code Decide / Quik Talk (2005 NEC)

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" rowspan="2" width=215 BGCOLOR="#FFFFFF" TEXT="#080000" background="1d80ce82egerdp.png"> <bR> <div> <B>2005 NEC</B><FONT SIZE="4" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>182 QUESTIONS</B></div> <bR> <div> <A HREF="id22_m.htm#hvac_4282008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>HVAC</U></U></A></div> <div> <A HREF="id22_m.htm#different_panelssame_raceway_4262008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Different panels/same raceway</U></U></A></div> <div> <A HREF="id22_m.htm#max_breaker_for_8_2_nm_4182008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Max breaker for 8-2 NM</U></U></A></div> <div> <A HREF="id22_m.htm#machine_on_460_volt_service_4162008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Machine on 460volt service</U></U></A></div> <div> <A HREF="id22_m.htm#nec_210_52_e__4152008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>NEC 210.52 (E)</U></U></A></div> <div> <A HREF="id22_m.htm#wire_size_4142008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wire size</U></U></A></div> <div> <A HREF="id22_m.htm#mother_in_law_suite_422008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Mother-in-law suite</U></U></A></div> <div> <A HREF="id22_m.htm#service_over_pool_412008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Service over pool</U></U></A></div> <div> <A HREF="id22_m.htm#277volt_lighting_3312008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>277volt lighting</U></U></A></div> <div> <A HREF="id22_m.htm#24vdc_power_supply_ocp_3262009" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>24VDC power supply OCPD</U></U></A></div> <div> <A HREF="id22_m.htm#20_or_30_amp_circuit_3212008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>20 or 30amp circuit</U></U></A></div> <div> <A HREF="id22_m.htm#multiple_conductors_2282008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Multiple conductors</U></U></A></div> <div> <A HREF="id22_m.htm#gfci_2272008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>GFCI</U></U></A></div> <div> <A HREF="id22_m.htm#re_grounding_seminar_2182008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Grounding seminar</U></U></A></div> <div> <A HREF="id22_m.htm#copper___aluminum_in_meter_can_2162008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Copper & Alum in meter can</U></U></A></div> <div> <A HREF="id22_m.htm#subpanel_in_detached_garage_272008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Sub-panel in detach garage</U></U></A></div> <div> <A HREF="id22_m.htm#wiring_a_sub_panel_252008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wiring a sub-panel</U></U></A></div> <div> <A HREF="id22_m.htm#lighting_control_1292008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Lighting control</U></U></A></div> <div> <A HREF="id22_m.htm#electric_stove_1122008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Electric stove</U></U></A></div> <div> <A HREF="id22_m.htm#re_generator_p_cord_1102008" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Generator P-cord</U></U></A></div> <div> <A HREF="id22_m.htm#double_wall_oven_11162007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Double wall oven</U></U></A></div> <div> <A HREF="id22_m.htm#own_general_contractor_1152007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Own General Contractor</U></U></A></div> <div> <A HREF="id22_m.htm#smoke_detector___arc_fault_1132007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Smoke detector & Arc-fault</U></U></A></div> <div> <A HREF="id22_m.htm#copper_or_alum_10162007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Copper or Aluminum</U></U></A></div> <div> <A HREF="id22_m.htm#upgrading_a_sub_panel_1062007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Upgrading a sub-panel</U></U></A></div> <div> <A HREF="id22_m.htm#gfci_in_ungrounded_homes_9142007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>GFCI in ungrounded homes</U></U></A></div> <div> <A HREF="id22_m.htm#daisy_chain_8292007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Daisy chain</U></U></A></div> <div> <A HREF="id22_m.htm#derating_conductors_8242007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Derating conductors</U></U></A></div> <div> <A HREF="id22_m.htm#troff_872007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Troff</U></U></A></div> <div> <A HREF="id22_m.htm#not_ul_listed_862007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Not UL listed</U></U></A></div> <div> <A HREF="id22_m.htm#add_another_sub_panel_862007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Add another sub-panel</U></U></A></div> <div> <A HREF="id22_m.htm#sub_panels_7252007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Subpanels</U></U></A></div> <div> <A HREF="id22_m.htm#hot_tub_7242007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Hot tub</U></U></A></div> <div> <A HREF="id22_m.htm#uf_b_for_pool_pump_7242007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>UF-B for pool pump</U></U></A></div> <div> <A HREF="id22_m.htm#3_ton_ac_unit_7162007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>3 Ton AC unit</U></U></A></div> <div> <A HREF="id22_m.htm#sub_panel_location_7112007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Subpanel location</U></U></A></div> <div> <A HREF="id22_m.htm#400_amp_service_panel_7102007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>400 amp service panel</U></U></A></div> <div> <A HREF="id22_m.htm#hot_wires_7102007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Hot wires</U></U></A></div> <div> <A HREF="id22_m.htm#gfi_gangs_792007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>GFCI gangs</U></U></A></div> <div> <A HREF="id22_m.htm#recept_distance_to_tub_792007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Receptacle distance to tub</U></U></A></div> <div> <A HREF="id22_m.htm#trench_wire_depth_792007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Trench wire depth</U></U></A></div> <div> <A HREF="id22_m.htm#electrical_meter_location_752007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Electrical meter location</U></U></A></div> <div> <A HREF="id22_m.htm#hot_tub_heads_up_732007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Hot tub heads up</U></U></A></div> <div> <A HREF="id22_m.htm#wires_through_4_units_6242007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wires through 4 units</U></U></A></div> <div> <A HREF="id22_m.htm#checks___balance_ajh_6182007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Checks & balance (AHJ)</U></U></A></div> <div> <A HREF="id22_m.htm#bonding_screw_6182007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Bonding screw</U></U></A></div> <div> <A HREF="id22_m.htm#new_100amp_subpanel_6182007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>New 100amp subpanel</U></U></A></div> <div> <A HREF="id22_m.htm#600_feet_of_wire_6172007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>600 ft of wire</U></U></A></div> <div> <A HREF="id22_m.htm#weatherhead_installation_692007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Weatherhead installation</U></U></A></div> <bR> <div> <A HREF="id22_m.htm#wires_in_a_hole_662007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wires in a hole</U></U></A></div> <div> <A HREF="id22_m.htm#cable_size_5302007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Cable size</U></U></A></div> <div> <A HREF="id22_m.htm#romax_used_on_swimming_pools_5292007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Romax used on swimming pools</U></U></A></div> <div> <A HREF="id22_m.htm#360va_outlet_5262007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>360VA outlet</U></U></A></div> <div> <A HREF="id22_m.htm#plugmold_in_kitchen_5212007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Plugmold in kitchen</U></U></A></div> <div> <A HREF="id22_m.htm#transformer_in_attic_5162007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Transformer in attic</U></U></A></div> <div> <A HREF="id22_m.htm#feed_mills_5132007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Feed mills</U></U></A></div> <div> <A HREF="id22_m.htm#article_680_42_c__5102007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Article 68.42(C)</U></U></A></div> <div> <A HREF="id22_m.htm#200_to_225_amp_increase_on_delta" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>200 to 225A increase on delta</U></U></A></div> <div> <A HREF="id22_m.htm#intent_of_the_code_522007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Intent of the code</U></U></A></div> <div> <A HREF="id22_m.htm#cabin_home_upgrade_4292007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Cabin home upgrade</U></U></A></div> <div> <A HREF="id22_m.htm#electrical_for_ac_replacement_4242007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Electrical for AC replacement</U></U></A></div> <div> <A HREF="id22_m.htm#7200_volt_primary_4242007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>7200 volt primary</U></U></A></div> <div> <A HREF="id22_m.htm#underground_service_conductor_4232007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Underground service conductors</U></U></A></div> <div> <A HREF="id22_m.htm#use_of_romax_4202007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Use of Romax</U></U></A></div> <div> <A HREF="id22_m.htm#retrofit_lighting_4182007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Retro-fit lighting</U></U></A></div> <div> <A HREF="id22_m.htm#12_wire_homerun_4172007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>12 wire homerun</U></U></A></div> <div> <A HREF="id22_m.htm#the_120240_v_specification_4112007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>The 120/240 v specification</U></U></A></div> <div> <A HREF="id22_m.htm#retro_fit_federal_pacific_492007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Retro-fit Federal Pacific</U></U></A></div> <div> <A HREF="id22_m.htm#gfci_limits_3302007_1" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>GFCI limits</U></U></A></div> <div> <A HREF="id22_m.htm#unused_knockouts_3252007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Unused knockouts</U></U></A></div> <div> <A HREF="id22_m.htm#breaker_box_3122007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Breaker box</U></U></A></div> <div> <A HREF="id22_m.htm#size_conductor_in_bedrooms_3122007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Size conductor in bedroom</U></U></A></div> <div> <A HREF="id22_m.htm#receptacle_in_concrete_slab_312007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Receptacle in concrete slab</U></U></A></div> <div> <A HREF="id22_m.htm#wiring__electric_meter__2272007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wiring electric meter</U></U></A></div> <div> <A HREF="id22_m.htm#island_with_no_appliance_2222007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Island with no appliance</U></U></A></div> <div> <A HREF="id22_m.htm#underground_wiring_2202007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Underground wiring</U></U></A></div> <div> <A HREF="id22_m.htm#undergound_service_upgrade_2202007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Underground service upgrade</U></U></A></div> <div> <A HREF="id22_m.htm#grounding_sub_panel_2172007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Grounding sub-panel</U></U></A></div> <div> <A HREF="id22_m.htm#pool_heaters_2162007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Pool heaters</U></U></A></div> <div> <A HREF="id22_m.htm#nm_b_in_hotel_construction_292007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>NM-B in hotel construction</U></U></A></div> <div> <A HREF="id22_m.htm#lighting_fixture_installation_222007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Light fixture installation</U></U></A></div> <div> <A HREF="id22_m.htm#center_load_power_1242007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Center load power</U></U></A></div> <div> <A HREF="id22_m.htm#smoke_detectors_1102007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Smoke detectors</U></U></A></div> <div> <A HREF="id22_m.htm#utility_service_conductors_1102007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Utility service conductors</U></U></A></div> <div> <A HREF="id22_m.htm#15___20_amp_branch_circuits_162007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>15 & 20 amp branch circuit</U></U></A></div> <div> <A HREF="id22_m.htm#xtr_room_design_question_142007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>XTR room design question</U></U></A></div> <div> <A HREF="id22_m.htm#sub_panel_in_attic_garage_112007" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Sub-panel in attic garage</U></U></A></div> <div> <A HREF="id22_m.htm#ground_wireac_connection_12292006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Ground wire / AC connection</U></U></A></div> <div> <A HREF="id22_m.htm#feed_meter_100_200amp_12252006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Feed meter 100 & 200 amp</U></U></A></div> <div> <A HREF="id22_m.htm#service_meter_wiring_12192006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Service meter wiring</U></U></A></div> <div> <A HREF="id22_m.htm#nmb_wireamp_load_12102006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>NMB wire amp load</U></U></A></div> <div> <A HREF="id22_m.htm#gfci_stickers_1272006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>GFCI stickers</U></U></A></div> <div> <A HREF="id22_m.htm#20_amp_receptacle_1232006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>20 amp receptacle</U></U></A></div> <div> <A HREF="id22_m.htm#aic_rating_question_11302006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>AIC rating question</U></U></A></div> <div> <A HREF="id22_m.htm#grounding_100amp_subpanel_11232006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Grounding 100amp subpanel</U></U></A></div> <div> <A HREF="id22_m.htm#large_closet_11212006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Large closet</U></U></A></div> <bR> <div> <A HREF="id22_m.htm#original_200_amp_service_11192006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Original 200 amp service</U></U></A></div> <div> <A HREF="id22_m.htm#wire_size_11112006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wire size</U></U></A></div> <div> <A HREF="id22_m.htm#two_circuits_in_a_single_box_10282006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Two circuits in a single box</U></U></A></div> <div> <A HREF="id22_m.htm#finding_outlets_10282006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Finding outlets</U></U></A></div> <div> <A HREF="id22_m.htm#advice_please_10122006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Advice please</U></U></A></div> <div> <A HREF="id22_m.htm#colol_coding_for_motor_conductor" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Color coding for motor conductor</U></U></A></div> <div> <A HREF="id22_m.htm#afci_s_962006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>AFCI's</U></U></A></div> <div> <A HREF="id22_m.htm#conductors_in_same_conduit_8232006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Conductors in same conduit</U></U></A></div> <div> <A HREF="id22_m.htm#hacr_breaker_8152006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>HACR breaker</U></U></A></div> <div> <A HREF="id22_m.htm#multi_outlet_used_on_20amp_kitchen" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Multi-outlet on 20 amp kitchen</U></U></A></div> <div> <A HREF="id22_m.htm#temporary_power_7182006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Temporary power</U></U></A></div> <div> <A HREF="id22_m.htm#question_on_grounding_7152006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Question on grounding</U></U></A></div> <div> <A HREF="id22_m.htm#e_mailing_elecpics_6262006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>E-mail elecpics</U></U></A></div> <div> <A HREF="id22_m.htm#nec_ampacity_table_6262006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>NEC ampacity table</U></U></A></div> <div> <A HREF="id22_m.htm#three_prong_test_indicator_6242006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Three prong test indicato</U></U></A><U>r</U></div> <div> <A HREF="id22_m.htm#big_problem_6162006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Big problem</U></U></A></div> <div> <A HREF="id22_m.htm#4_family_residence_6162006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>4 Family residence</U></U></A></div> <div> <A HREF="id22_m.htm#the_smartest_man_alive_6132006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>The smartest man alive</U></U></A></div> <div> <A HREF="id22_m.htm#circuit_question_6122006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Circuit question</U></U></A></div> <div> <A HREF="id22_m.htm#dedicated_equipment_space_652006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Dedicated equipment space</U></U></A></div> <div> <A HREF="id22_m.htm#aritcle_760_622006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Article 760</U></U></A></div> <div> <A HREF="id22_m.htm#calculating_loads_5312006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Calculating loads</U></U></A></div> <div> <A HREF="id22_m.htm#under_home_wiring_5272006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Under home wiring</U></U></A></div> <div> <A HREF="id22_m.htm#adding_a_subpanel_5232006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Adding a subpane</U></U></A><U>l</U></div> <div> <A HREF="id22_m.htm#panelboards_5232006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Panelboards</U></U></A></div> <div> <A HREF="id22_m.htm#power_to_garden_shed_5182006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Power to garden shed</U></U></A></div> <div> <A HREF="id22_m.htm#2_awg_wire_ground_5132006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>2 awg wire ground</U></U></A></div> <div> <A HREF="id22_m.htm#out_door_pool_circuit_592006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Outdoor pool circuit</U></U></A></div> <div> <A HREF="id22_m.htm#send_me_a_sketch_582006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Send me a sketch</U></U></A></div> <div> <A HREF="id22_m.htm#branches_in_finished_garage_572006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Branches in finished garage</U></U></A></div> <div> <A HREF="id22_m.htm#underground_wiring_572006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Underground wiring</U></U></A></div> <div> <A HREF="id22_m.htm#height_of_duplex_plug_532006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Height of duplex plug</U></U></A></div> <div> <A HREF="id22_m.htm#double_landing_512006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Double landing</U></U></A></div> <div> <A HREF="id22_m.htm#breaker_sizing_512006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Breaker sizing</U></U></A></div> <div> <A HREF="id22_m.htm#smoke_alarms_4272006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Smoke alarms</U></U></A></div> <div> <A HREF="id22_m.htm#6_ft_above_equipment_4252006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>6 FT above equipment</U></U></A></div> <div> <A HREF="id22_m.htm#disconnects_for_motors_4202006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Disconnects for motors</U></U></A></div> <div> <A HREF="id22_m.htm#gfci_s_on_swimming_pools_4142006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>GFCI's on swimming pools</U></U></A></div> <div> <A HREF="id22_m.htm#kitchen_code_question_4132006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Kitchen code question</U></U></A></div> <div> <A HREF="id22_m.htm#conduit_vs_cable_4122006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Conduit Vs cable</U></U></A></div> <div> <A HREF="id22_m.htm#minimum_size_ground_452006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Minimum size ground</U></U></A></div> <div> <A HREF="id22_m.htm#house_in_china_452006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>House in China</U></U></A></div> <div> <A HREF="id22_m.htm#_power_in_small_buildings_442006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Power in small buildings</U></U></A></div> <div> <A HREF="id22_m.htm#tankless_water_heater_432006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Tankless water heaters</U></U></A></div> <div> <A HREF="id22_m.htm#baseboard_heaters_422006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Baseboard heaters</U></U></A></div> <div> <A HREF="id22_m.htm#200_or_400_amp_3282006_1" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>200 or 400 amps</U></U></A></div> <div> <A HREF="id22_m.htm#plugmolding_3282006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Plugmolding</U></U></A></div> <bR> <div> <A HREF="id22_m.htm#service_entrance_requirement_3252006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Service entrance requirements</U></U></A></div> <div> <A HREF="id22_m.htm#conduit_size_3232006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Conduit size</U></U></A></div> <div> <A HREF="id22_m.htm#breaker_box_in_bedroom_3222006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Breaker box in bedroom</U></U></A></div> <div> <A HREF="id22_m.htm#query_3222006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Query</U></U></A></div> <div> <U>1</U><A HREF="id22_m.htm#100_amp_subpanel_3202006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>00 amp subpanel</U></U></A></div> <div> <A HREF="id22_m.htm#washer_machines_3102006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Washer machines</U></U></A></div> <div> <A HREF="id22_m.htm#smoke_alarm_units_392006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Smoke alarm units</U></U></A></div> <div> <A HREF="id22_m.htm#shop_in_my_house_362006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Shop in my house</U></U></A></div> <div> <A HREF="id22_m.htm#replace_main_circuits_342006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Replace main circuit</U></U></A></div> <div> <A HREF="id22_m.htm#nec_110_9_322006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>NEC 110.9</U></U></A></div> <div> <A HREF="id22_m.htm#motor_feeders_2282006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Motor feeders</U></U></A></div> <div> <A HREF="id22_m.htm#different_voltges_2282006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Different voltages</U></U></A></div> <div> <A HREF="id22_m.htm#new_200_amp_panel_2282006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>New 200 amp panel</U></U></A></div> <div> <A HREF="id22_m.htm#200_amp_panel_2272006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>200 amp panel</U></U></A></div> <div> <A HREF="id22_m.htm#metal_helide_high_bay_2202006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Metal helide high bay</U></U></A></div> <div> <A HREF="id22_m.htm#let_the_code_decide_2162006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Let the code decide</U></U></A></div> <div> <A HREF="id22_m.htm#running_multiple_cables_2132006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Running multiple cables</U></U></A></div> <div> <A HREF="id22_m.htm#want_to_make_sure_282006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Always want to make sure</U></U></A></div> <div> <A HREF="id22_m.htm#arc_fault_circuits_232006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Arc fault circuits</U></U></A></div> <div> <A HREF="id22_m.htm#wiring_of_existing_homes_1302006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wiring of existing homes</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><U> </U></FONT></div> <div> <A HREF="id22_m.htm#pool_pump_gfci_protection_1212006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Pool Pump GFCI protection</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><U> </U></FONT></div> <div> <A HREF="id22_m.htm#hvac_disconnect_1172006_" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>HVAC disconnect</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><U> </U></FONT></div> <div> <A HREF="id22_m.htm#smoke_detectors_interconnections" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Smoke detector interconnections</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><A HREF="id22_m.htm#smoke_detectors_interconnections" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U> </U></U></A></FONT></div> <div> <A HREF="id22_m.htm#nec_outdoors_172006_" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>NEC outdoors</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><A HREF="id22_m.htm#nec_outdoors_172006_" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U> </U></U></A></FONT></div> <div> <A HREF="id22_m.htm#switch_leg_172006_" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Switch leg</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><U> </U></FONT></div> <div> <A HREF="id22_m.htm#uf_wire_installed_152006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>UF wire installed</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><U> </U></FONT></div> <div> <A HREF="id22_m.htm#wire_under_staple_142006" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Wires under staple</U></U></A><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="07eb6040.png" border=0 width="182" height="4" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B>2002 NEC</B> </div> <bR> <div> <A HREF="id45.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U><U>All Code questions from 2002 NEC click here</U></U></A></div> <div> <IMG SRC="07fb6040.png" border=0 width="182" height="4" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B>1999 NEC</B><FONT SIZE="1" COLOR="#FFFFFF" FACE="Arial" > </FONT></div> <div> <A HREF="id43.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U><U>All Code questions from 1999 </U></U></A><A HREF="id43.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U><U>and below</U></U></A><U> </U><A HREF="id43.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U><U>click here</U></U></A></div> <div> <A HREF="id43_disconnects_121602_.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U><U>Disconnects</U></U></A><U> </U><FONT SIZE="3" COLOR="#FFFFFF" FACE="Arial" ><IMG SRC="07db6040.png" border=0 width="182" height="4" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></FONT></div> <div> <B>1996 & lower NEC</B><FONT SIZE="1" COLOR="#FFFFFF" FACE="Arial" > </FONT></div> <div> <A HREF="id22_m.htm#send_us_your_code_questio" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>bottom of page</U></U></A></div> <div> <A HREF="id22_m.htm" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><A HREF="id22_m.htm" TARGET="TRLX_Middle" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U> </U></U></A></div> <bR> <bR> <bR> <bR> <bR> </td> <td valign="top" colspan=2 height=95 BGCOLOR="#CC99CC" TEXT="#080000" background="1d7265f1ezuady.png"> <div> <FONT SIZE="5" COLOR="#FFFFFF" FACE="Times New Roman" ><B>EDSTUBBS.COM                    Electrical Contractors Web Site</B></FONT><B>  </B><B> </B><B>|   </B><A HREF="index.htm" TARGET="_top" TITLE="EDSTUBBS.COM Electric"><U><B>home</B></U></A></div> <div> <A HREF="id18.htm" TARGET="_top" TITLE="Code Classes and Master Electricians Exa"><U>Code Classes and Master Electricians Exam Review</U></A>   |   <A HREF="id19.htm" TARGET="_top" TITLE="Books Reference"><U>Books & Reference</U></A>   |   <A HREF="id20.htm" TARGET="_top" TITLE="Code Interpretation"><U>Code Interpretation</U></A>   |   <A HREF="id21.htm" TARGET="_top" TITLE="Letters Comments"><U>Letters & Comments</U></A>   |   <A HREF="id30.htm" TARGET="_top" TITLE=" Let The Code Decide / Quik Talk (2008 N"><U> Let The Code Decide / Quik Talk (2008 NEC) </U></A>   |   <B>Let The Code Decide / Quik Talk (2005 NEC)</B>   |   <A HREF="id45.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U>Let The Code Decide / Quik Talk (2002 NEC)</U></A>   |   <A HREF="id43.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U>Let The Code Decide / Quik Talk (1999, 1996 and Older)</U></A>   |   <A HREF="id23.htm" TARGET="_top" TITLE="Taking The State Test"><U>Taking The State Test</U></A>   |   <A HREF="id24.htm" TARGET="_top" TITLE="Tips Hints"><U>Tips & Hints</U></A>   |   <A HREF="id25.htm" TARGET="_top" TITLE="The Authority Having Jurisdiction"><U>The Authority Having Jurisdiction</U></A>   |   <A HREF="id26.htm" TARGET="_top" TITLE="Email List"><U>E-mail List</U></A>   |   <A HREF="id27.htm" TARGET="_top" TITLE="My Electrical Background"><U>My Electrical Background</U></A>   |   <A HREF="id29.htm" TARGET="_top" TITLE="Gwinnett Tech Seminars / Continuing Educ"><U>Gwinnett Tech Seminars / Continuing Education</U></A></div> <div> </div> </td> </tr><tr> <td valign="top" height=385 colspan=2 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <I>Let The Code Decide / Quik Talk (2005 NEC)</I></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B><IMG SRC="052de4b0.png" border=0 width="222" height="331" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> <div> <FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><B>In 1994 after being an electrical inspector for more than six years, question after question was asked about swimming pools and other questions on code, so I decided to write down the answers and hand them out. The first Quik Talk  article I wrote was about </B></FONT><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="id43_ground_rods.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U><B><U>ground rods at a pool site</U></B></U></A></FONT><FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><A HREF="id43_ground_rods.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U><B>.</B></U></A><B> It went over well with inspectors and contractors, so I decided to continue with the Quik (Quick) Talk. </B></FONT><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B>Do to the overwhelming questions sent to me, it may take 4 to 12 weeks for me to give you my answer. Some of your questions may not be answered because your e-mails don't give state or local municipalities locations unless you tell me. Thanks for your questions and Your patience.</B></FONT><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT><B>If you would like to see all of the questions I have answered for the past NEC click </B><A HREF="id45.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U><B>here for 2002 NEC</B></U></A><B> and </B><A HREF="id43.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (1999, 1"><U><B>here for 1999 & earlier</B></U></A></div> <div> <I>Do you want to know in advanced about Seminars & Continuing Education Classes?</I><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <A HREF="id26.htm" TARGET="_top" TITLE="Email List"><U><I><U>click here</U></I></U></A><FONT SIZE="3" COLOR="#000000" FACE="Times New" ><I> </I></FONT><FONT SIZE="3" COLOR="#800080" FACE="Times New" ><I>and follow the instructions.</I></FONT><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="0811e250.gif" border=0 width="30" height="37" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="the_state_of_georgia_is_1"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B><B>"The State of Georgia is now on the 2008 NEC"</B><FONT SIZE="1" COLOR="#0000FF" FACE="Times New" ><B> </B></FONT></div> <div> <B>Go to: </B><FONT SIZE="3" COLOR="#0000FF" FACE="Times New" ><A HREF="id25_want_to_see_if_your_city_or_county_has.htm" TARGET="_top" TITLE="The Authority Having Jurisdiction"><U><U>City and County</U></U></A></FONT> <B>for local amendments</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="hvac_4282008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>HVAC 4/28/2008</B></div> <div> <B>I connected a subpanel about 4ft from where my ac unit is going to seat. This unit will be connected to a 30A breaker. Do I need to install a disconnect for this unit or the breaker will serve as a disconnect since is so close to the unit? Thanks </B></div> <div> <B>Roberto</B></div> <bR> <div> Your question sound like you are in compliance with the Article 440.14 location,</div> <bR> <div> <B>440.14 Location.</B></div> <div> <I>Disconnecting means shall be located within sight from and readily accessible from the air-conditioning or refrigerating equipment. The disconnecting means shall be permitted to be installed on or within the air-conditioning or refrigerating equipment. </I></div> <div> <I>The disconnecting means shall not be located on panels that are designed to allow access to the air-conditioning or refrigeration equipment.</I></div> <div> <I>Exception No. 1: Where the disconnecting means provided in accordance with 430.102(A) is capable of being locked in the open position, and the refrigerating or air-conditioning equipment is essential to an industrial process in a facility where the conditions of maintenance and the supervision ensure that only qualified persons service the equipment, a disconnecting means within sight from the equipment shall not be required.</I></div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="different_panelssame_raceway_4262008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Different panels/same raceway 4/26/2008</B></div> <div> <B>hello, my question is, are you allowed to run wires that come from four different panel in the same race way and than branch out. </B></div> <div> <B>thanks</B></div> <bR> <div> That depends on the equipment that you are feeding too and coming from! I don't have enough information to give you a stable answer. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="max_breaker_for_8_2_nm_4182008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Max breaker for 8-2 NM 4/18/2008</B></div> <div> <B>Hi Ed! </B></div> <div> <B>We're replacing a range and need to know what the Maximum breaker can be for an 8-2 wire with ground, NM and 600 volt - New range is asking for 50 amp circuit. Is it ok to put a 50 amp breaker on this circuit? </B></div> <div> <B>Thanks so much! </B></div> <div> <B>Jennifer</B></div> <bR> <div> The conductors will have to be 8-3 copper with ground to use a 50 amp breaker. The range requires a neutral conductor, and the terminals shall be rated at 75 degrees for the breaker.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="machine_on_460_volt_service_4162008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Machine on 460 volt service 4/16/2008</B></div> <div> <B>Hello Mr. Stubbs,</B></div> <div> <B>I'm to connect a machine 460VAC 3 phase, which has 67 amp fuses on the main disconnect. </B></div> <div> <B>My question is since it is less than 20 feet from the 460 panel to the connection point, can I use flexible cable?</B></div> <div> <B>I was going to use 3 AWG, 4 conductor cable. The machine is for demonstration and training purposes.</B></div> <div> <B>OR do I need to run rigid conduit?</B></div> <div> <B>Thanks,</B></div> <div> <B>Frank</B></div> <bR> <div> You can use any wiring method in chapter 3 as long as you comply with the uses permitted from the wiring method you choose. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="nec_210_52_e__4152008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>NEC 210.52(E) 4/15/2008</B></div> <div> <B>Ed,</B></div> <div> <B>In the City of ......., is it required in a multi-family dwelling that the exterior receptacle be installed on the ground floors with access to egress? Or is there a case where this requirement might be waived. We have an owner who wishes to delete the receptacles. Your response would be greatly appreciated.</B></div> <div> <B>Cliff </B></div> <bR> <div> Yes it is required by code. I will never understand why a owner wishes not to have receptacles on the outside. I don't think you will find any municipality that will give a variance or waive a minimum requirement unless it posses a hazard or unsafe condition. Sometimes it is hard to sell a home afterwards when waives are allowed. I believe the bubble cover outlet is what the owner is disturbed over. Most people make changes after the final inspection.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wire_size_4142008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wire size 4/14/2008</B></div> <div> <B>Hey </B></div> <div> <B>I am putting a new 125 service in my garage. I am installing meter base and 200 amp in the house. Can run #2 wire copper from the meter to the 125 amp that is 20 feet away under ground or do I need to run 1/0. Do I need to put a ground rod in the ground for the 125 amp if it is going to be coming form the meter. </B></div> <div> <B>thanks </B></div> <div> <B>Steve </B></div> <bR> <div> If you have a detached garage, then you will have to install an additional ground rod. The #2 copper or 1/0 aluminum will meet the minimum requirements</div> <div> (see mother-in-law suite below)</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="mother_in_law_suite_422008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Mother-in-law suite 4/2/2008</B></div> <div> <B>I have a 200 amp panel in my house, but I recently built a mother in law suite approx. 100 ft. away that has a 125 amp sub panel that 7-20 amp breakers- 1 40 amp breaker (range), 2- 30amp breakers (dryer, hot water heater), would also like a 30 amp for the window unit ac, but what size copper do I need to supply the 125 amp panel (the copper coming from the 200amp service a 100ft away) </B></div> <div> <B>thank you </B></div> <div> <B>Ryan</B></div> <bR> <div> The ampacity of the feeders shall be according to table 310.15(B)(6) and the requirements of 240.4</div> <bR> <div> The minimum size feeder conductor from the table is #2 awg copper or 1/0 aluminum. The feeder load may be OK, but the total service load should be recalculated. I don't know if the house is all electric.</div> <bR> <div> <B>240.4 Protection of Conductors.</B></div> <div> <B>(B) Devices Rated 800 Amperes or Less.</B> The next higher standard overcurrent device rating (above the ampacity of the conductors being protected) shall be permitted to be used, provided all of the following conditions are met:   </div> <div> <B>(1)</B>     The conductors being protected are not part of a multioutlet branch circuit supplying receptacles for cord-and-plug-connected portable loads. </div> <div> <B>(2)</B>     The ampacity of the conductors does not correspond with the standard ampere rating of a fuse or a circuit breaker without overload trip adjustments above its rating (but that shall be permitted to have other trip or rating adjustments). </div> <div> <B>(3) </B>    The next higher standard rating selected does not exceed 800 amperes.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="service_over_pool_412008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Service over pool 4/1/2008</B></div> <div> <B>The Electrical Service (Triplex), that attaches to our house, passes over our swimming pool. It is 14' 9" above the pool. Is this legal? and if so, how much clearance should there be?</B></div> <bR> <div> Which came first? If the pool was installed on an exiting overhead service, the inspector should have caught that before the final inspection. If the overhead service was installed after the pool construction, you may have to get with the local power company to correct the minimum height above the pool. The minimum clearance in any direction from the water level is 25 ft. The minimum clearance in any direction from the swimming pool and similar installations is 17 ft.</div> <bR> <div> <B>680.8 Overhead Conductor Clearances.</B> <I>Overhead conductors shall meet the clearance requirements in this section. Where a minimum clearance from the water level is given, the measurement shall be taken from the maximum water level of the specified body of water.</I></div> <div> <B>(A) Power.</B><I> With respect to service drop conductors and open overhead wiring, swimming pool and similar installations shall comply with the minimum clearances given in Table 680.8 and illustrated in Figure 680.8.</I></div> <bR> <bR> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="277volt_lighting_3312008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>277volt lighting 3/31/2008</B></div> <div> <B>I know your not allowed to use 12-2 romex in commercial applications question is will 12-2 romex work fine on a 20 amp 277 volt circuit?The inside conductor in THHN and good for 90 degrees and 600 volts??</B></div> <bR> <div> There are several concerns about you using NM cable (Romex is a brand name) for a 277/480 circuit. If you go to Article 334 Nonmetallic-Sheathed Cable, you will see 334.10 Uses permitted, and 334.12 Uses not permitted. NM can be used in commercial applications and can be used for 277/480 volts as long as the sheath is rated 600 volts. The ampacity rating on the conductors shall not exceed the 60 degree column for NM cable.</div> <bR> <div> <B>334.80 Ampacity.</B></div> <div> <I>The ampacity of Types NM, NMC, and NMS cable shall be determined in accordance with 310.15. The ampacity shall be in accordance with the 60°C (140°F) conductor temperature rating. The 90°C (194°F) rating shall be permitted to be used for ampacity derating purposes, provided the final derated ampacity does not exceed that for a 60°C (140°F) rated conductor. The ampacity of Types NM, NMC, and NMS cable installed in cable tray shall be determined in accordance with 392.11.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="24vdc_power_supply_ocp_3262009"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>24VDC power supply OCP 3/26/2009</B></div> <div> <B>Mr. Stubs,</B></div> <div> <B>What is the NEC code requirement for protecting 24Vdc power supplies in industrial panels? I have fused the incoming VAC and the VDC outputs together. The company I currently work for only fuses the incoming VAC and I cannot find a code ruling on this.</B></div> <div> <B>Please Email me back.</B></div> <div> <B>Best Regards,</B></div> <div> <B>Greg </B></div> <bR> <div> That would be Article 450.3(B) Transformers. (See table 450.3(B))</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="20_or_30_amp_circuit_3212008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>20 or 30 amp circuit 3/21/2008</B></div> <div> <B>I recently had a home inspection. They buyers' inspector stated that the air conditioning unit is 20 amp and it is hooked up to a 30 am circuit. He stated that this "very dangerous and voids the manufacturer's warranty." Is this true? Especially the part about it being "very dangerous." Is it ok to have a 20 amp item such as an outside ac hooked up to a 30 am circuit? </B></div> <div> <B>Thanks. </B></div> <div> <B>Dora Z.</B></div> <bR> <div> Since I can't see the listing and label on the AC unit, my conclusion would have to be in favor of the inspectors observation. The manufactures will list the unit requirement to protect their equipment.  The label will show the minimum size ampacity of the conductor and the maximum size overcurrent protection. If you exceed any of their requirements, you will void the manufacturer's warranty. Example: If the label said "minimum ampacity 17 amps, maximum overcurrent is 25 amps fuse or HACR breaker", you can install a #14 conductor and a 25 amp fuse or HACR breaker. Table 310.16 shows that 14awg* (see 240.4(D)) is rated at 20 amps in the 60 &75 degree column, and 25 amps in the 90 degree column.</div> <bR> <div> <B>240.4 Protection of Conductors</B>.</div> <div> <I>Conductors, other than flexible cords, flexible cables, and fixture wires, shall be protected against overcurrent in accordance with their ampacities specified in 310.15, unless otherwise permitted or required in 240.4(A) through (G).</I></div> <bR> <div> <B>(D) Small Conductors</B>.<I> </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>Unless specifically permitted</I></FONT><I> in 240.4(E) or 240.4(G), the overcurrent protection shall not exceed 15 amperes for 14 AWG, 20 amperes for 12 AWG, and 30 amperes for 10 AWG copper; or 15 amperes for 12 AWG and 25 amperes for 10 AWG aluminum and copper-clad aluminum after any correction factors for ambient temperature and number of conductors have been applied.</I></div> <bR> <div> <B>(G) Overcurrent Protection for Specific Conductor Applications</B>. <I>Overcurrent protection for the specific conductors shall be permitted to be provided as referenced in Table 240.4(G). (Shows AC and Refrigeration equipment conductors)</I></div> <bR> <div> Contractors have a habit of sizing the OCPD to the size of the conductors used. I am sure that a #10 conductor was installed to the compressor unit on the rough. Well, the 30 amp OCPD will protect the conductors, but we must protect the equipment!! </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="multiple_conductors_2282008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Multiple conductors 2/28/2008</B></div> <div> <B>Mr. Stubbs, </B></div> <div> <B>Great web site, thank you for the service! </B></div> <div> <B>Question: Is there a limit or restriction of number of service conductors under a single connector or is  a function of the connector design? Example: 2 parallel 4/0 cu conductors placed under one lug (connector) on a meter base? </B></div> <div>  </div> <div> <B>John</B></div> <div>  </div> <div> Good question. I had turned down so many inspections with the contractors placing more than two conductors under one terminal. If you are using a power company meter base, you should check with them first.</div> <div> 110.14(A) specifies the use of more than one conductor in a terminal. The terminals will have an engraved stamp stating the maximum number of conductors and the minimum to maximum size. </div> <div> Example 1: #2-250 kcmils = <B>one conductor size</B> of #2 awg through 250 kcmils al-cu (cooper or aluminum).</div> <div> Example 2: 2  #2-250 kcmils = <B>two conductors of any size </B>of #2 awg through 250 kcmils al <B>or</B> cu. (See 110.14 Electrical connections below) If you look inside of the terminal, the shape of the opening will look like a skull. If they are completely round, then only one conductor will be allowed.</div> <bR> <div> <B>(A) Terminals</B>. Connection of conductors to terminal parts shall ensure a thoroughly good connection without damaging the conductors and shall be made by means of pressure connectors (including set-screw type), solder lugs, or splices to flexible leads. Connection by means of wire-binding screws or studs and nuts that have upturned lugs or the equivalent shall be permitted for 10 AWG or smaller conductors.</div> <bR> <div> <B>Terminals for more than one conductor and terminals used to connect aluminum shall be so identified.</B></div> <div> <B>110.14 Electrical Connections.</B></div> <div> Because of different characteristics of dissimilar metals, devices such as pressure terminal or pressure splicing connectors and soldering lugs shall be identified for the material of the conductor and shall be properly installed and used. <B>Conductors of dissimilar metals shall not be intermixed in a terminal or splicing connector where physical contact occurs between dissimilar conductors</B> (such as copper and aluminum, copper and copper-clad aluminum, or aluminum and copper-clad aluminum), unless the device is identified for the purpose and conditions of use. Materials such as solder, fluxes, inhibitors, and compounds, where employed, shall be suitable for the use and shall be of a type that will not adversely affect the conductors, installation, or equipment.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="gfci_2272008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>GFCI 2/27/2008</B></div> <div> <B>Hello GFCI need to be visible in the bathroom?</B></div> <bR> <div> There are people that would argue about the location of a receptacle in the bathroom, period! A GFCI receptacle is even a bigger eyesore. The primary need for having a receptacle in a bathroom is to plug in appliances for bathroom uses and to avoid extension cord runs to the bathroom. The biggest concern is the serious shock hazards in a bathroom, being in a wet location.  GFCI's were required in 1971 to reduce the dangers of a severe or fatal electrical shock. Once the unattractive receptacle were required by code, homeowners asked the contractors to hide them under the sink, in the medicine cabinet, in the drawer or not put one in. Believe me, one owner was so upset about a receptacle in his bathroom, he tried take it to court to have the name changed to a powder room. If the receptacle is an eyesore to you, then you can have your electrician install a GFCI breaker and replace the fixture over the sink with a combination fixture/receptacle. It shall be within 3 ft of the edge of the basin.</div> <div>  </div> <div> <B>210.52(D) Bathrooms.</B> In dwelling units, at least one wall receptacle outlet shall be installed in bathrooms within 900 mm (3 ft) of the outside edge of each basin. The receptacle outlet <B>shall be located on a wall or partition</B> that is adjacent to the basin or basin countertop. </div> <bR> <div> Notice that it said located on a wall or partition. This is and there always will be a required convent outlet that shall accessible for use.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  <A NAME="re_grounding_seminar_2182008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <B>Re: Grounding seminar 2/18/2008</B></div> <div> <B>Ed what is the lighting requirements for a hardware store? I looked at 220.12 and it shows 3 va per square foot and I calculated a Heat Loss heat gain for someone and it showed the amount of heat to be real high off the lights 301,000 btus to be exact so he said he wanted to reduce the number of lights. I told him I don't think you are allowed by the code. Am I reading the code right?</B></div> <bR> <div> The general lighting load table 220.12 is for calculation purposes only. You can have more or less lighting in most areas. Foot candle light is usually designed by a lighting design or engineering firm. You have two ways of calculating the lighting requirements. Design the lights to your needs, or calculate the minimum demand for the service load. If you are going GREEN, lighting demands will decrease. If you need more information on lighting demands and energy efficiency, look at ASHRAE, 2004.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="copper___aluminum_in_meter_can_2162008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Copper & Aluminum in meter can 2/16/2008</B></div> <div> <B>I am up grading from a 100 amp panel to a 200 amp panel</B></div> <div> <B>My feed to the disconnect is 4 wire #4 alum the #4 alum is to big for the meter lugs. Can I switch to a smaller size copper from the disconnect to the meter so the lugs will work?</B></div> <div> <B>The reason I am running to a disconnect is because this is a duplex and the panels have to be grouped. I will up grade 2nd unit later on. </B></div> <div> <B>Thanks Mark</B></div> <bR> <div> I know this is not the answer you want to hear! The minimum size for a 200 amp service is 4/0 alum, or 2/0 copper, not #4 alum. If the lugs are too small, then you have to change out the meter. (upgrade). You don't think the power company would appreciate you trying to get blood from a turnip? This not an improvement for the intent to upgrade. Let the code decide.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="subpanel_in_detached_garage_272008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Subpanel in detached garage 2/7/2008</B></div> <div> <B>I have a new residential detached garage being built and plan on installing more than one electrical circuit (one -50 amp outlet & two-20 amp circuits for plugs & lights). As per 2005 NEC, do I have to install a new sub-panel within the garage? If a sub-panel is required to be installed within the garage, what code section requires that a sub-panel be installed? If a sub-panel is NOT required to be installed within the garage, how do I connect these outlets to the grounding electrode or grounding electrode system.</B></div> <bR> <div> First and foremost, electrical circuits are not required in a detached garage. If you plan to install more than one branch circuit in the detached garage, a sub-panel shall be required  per article 225-30. </div> <bR> <div> <B>Article 225 Part II. More Than One Building or Other Structure </B></div> <div> <B>225.30 Number of Supplies.</B></div> <div> <I>Where more than one building or other structure is on the same property and under single management, each additional building or other structure served that is served by a branch circuit or feeder on the load side of the service disconnecting means shall be supplied by only one feeder or branch circuit unless permitted in 225.30(A) through (E). For the purpose of this section, a multiwire branch circuit shall be considered a single circuit.</I></div> <bR> <div> Article 250.32 covers the second part of your question on grounding. You must focus your attention on 250.32 (B)(1)and (2) for correct grounding of the detached garage. 250.32(B)(1) requires an equipment ground (4 wire feeder) run to the detached garage. You can only use 230.32(B)(2) where the three conditions in this section are applicable.</div> <bR> <div> <B>250.32 Two or More Buildings or Structures Supplied by Feeders or Branch circuits.</B></div> <div> <B>(A) Grounding Electrode.</B> <I>Where two or more buildings or structures are supplied from a common ac service by a feeder(s) or branch circuit(s), the grounding electrode(s) required in Part III of this article at each building or structure shall be connected in the manner specified in 250.32(B) or (C). Where there are no existing grounding electrodes, the grounding electrode(s) required in Part III of this article shall be installed.</I></div> <bR> <div> <B>(B) Grounded Systems.</B> <I>For a grounded system at the separate building or structure, the connection to the grounding electrode and grounding or bonding of equipment, structures, or frames required to be grounded or bonded shall comply with either 250.32(B)(1) or (2).</I></div> <div> <I> </I><I><B>(1)</B></I><I> Equipment Grounding Conductor. An equipment grounding conductor as described in 250.118 shall be run with the supply conductors and connected to the building or structure disconnecting means and to the grounding electrode(s). The equipment grounding conductor shall be used for grounding or bonding of equipment, structures, or frames required to be grounded or bonded. The equipment grounding conductor shall be sized in accordance with 250.122. Any installed grounded conductor shall not be connected to the equipment grounding conductor or to the grounding electrode(s).</I></div> <div> <I> </I><I><B>(2)</B></I><I> Grounded Conductor. Where (1) an equipment grounding conductor is not run with the supply to the building or structure, (2) there are no continuous metallic paths bonded to the grounding system in both buildings or structures involved, and (3) ground-fault protection of equipment has not been installed on the supply side of the feeder(s), the grounded circuit conductor run with the supply to the building or structure shall be connected to the building or structure disconnecting means and to the grounding electrode(s) and shall be used for grounding or bonding of equipment, structures, or frames required to be grounded or bonded. The size of the grounded conductor shall not be smaller than the larger of either of the following:  </I></div> <div> <I>(1)     That required by 220.61 </I></div> <div> <I>(2)     That required by 250.122</I></div> <bR> <div> <IMG SRC="1458f780.png" border=0 width="399" height="376" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> Also see <A HREF="#sub_panel_location_7112007" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U>Sub-panel location 7/11/2007</U></A></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wiring_a_sub_panel_252008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wiring a sub-panel 2/5/2008</B></div> <div> <B>Sir, </B></div> <div> <B>Want to check on PVC Connection that electrical cable is running thru to main panel. Threaded connector has PVC nut, also have metal nut. Does metal nut go inside box, then pvc nut or does metal not go on outside of box, then PVC nut inside? </B></div> <div> <B>Thanks.</B></div> <bR> <div> I have yet to see a threaded PVC raceway, but there are threaded connectors for the PVC. Since the connector is smooth and is sized to cover the opening, a locknut of metal or plastic is not required on the outside of the enclosure. </div> <bR> <div> Considering your question, I decided to look up the requirements for locknuts. According to article 352.100 Construction Specification, Rigid Nonmetallic Conduit (RNC), known in common practice as PVC; RCN and <B>fittings </B>shall be composed of <B>nonmetallic material</B> that is resistant to moisture and chemical atmosphere. </div> <bR> <div> <B>352.100 Construction</B>.</div> <div> <I>RNC and fittings shall be composed of suitable nonmetallic material that is resistant to moisture and chemical atmospheres. For use above ground, it shall also be flame retardant, resistant to impact and crushing, resistant to distortion from heat under conditions likely to be encountered in service, and resistant to low temperature and sunlight effects. For use underground, the material shall be acceptably resistant to moisture and corrosive agents and shall be of sufficient strength to withstand abuse, such as by impact and crushing, in handling and during installation. Where intended for direct burial, without encasement in concrete, the material shall also be capable of withstanding continued loading that is likely to be encountered after installation.</I></div> <bR> <div> I, like<I> </I>other municipalities, have not enforced metal locknuts on RNC connectors above ground, since they do not pose any shock hazards or corrosive conditions on the inside of the enclosures. You can say that the intent was met by the authority having jurisdiction.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="lighting_control_1292008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Lighting control 1/29/2008</B></div> <div> <B>Mr. Stubbs, </B></div> <div> <B>I have a low voltage lighting relay panel with 48 relays. I would like to run both emergency and non-emergency lighting circuits to this relay panel for control of lighting in an area. </B></div> <div> <B>Is this allowed? </B></div> <div> <B>Thanks, </B></div> <div> <B>Tim</B></div> <bR> <div> The only answer I can refer to you is that you comply with Article 700.9(B). I don't know how your low voltage panel is wired. Do you have an emergency light in every light fixture? Are you in a transfer equipment enclosure or a junction box? If not, you will have your first violation!</div> <bR> <div> <B>700.9 Wiring, Emergency System.</B></div> <div> <B>(B) Wiring.</B> <I>Wiring of two or more emergency circuits supplied from the same source shall be permitted in the same raceway, cable, box, or cabinet. Wiring from an emergency source or emergency source distribution overcurrent protection to emergency loads shall be kept entirely independent of all other wiring and equipment, unless otherwise permitted in (1) through (4):   </I></div> <div> <I>(1)     Wiring from the normal power source located in transfer equipment enclosures </I></div> <div> <I>(2)     Wiring supplied from two sources in exit or emergency luminaires (lighting fixtures) </I></div> <div> <I>(3)     Wiring from two sources in a common junction box, attached to exit or emergency luminaires (lighting fixtures) </I></div> <div> <I>(4)     Wiring within a common junction box attached to unit equipment, containing only the branch circuit supplying the unit equipment and the emergency circuit supplied by the unit equipment</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  <A NAME="electric_stove_1122008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <B>Electric Stove 1/12/2008</B></div> <div> <B>Hi, </B></div> <div> <B>My question is what size of romax do you use to install an electric stove. We live in a trailer in New Mexico, the trailer was not wired for an electric stove and we would like to install one. </B></div> <div> <B>Thank You </B></div> <div> <B>Sheri</B></div> <bR> <div> The only answer I can give you is for you to contact an electrical contractor and have him go to Article 550 Mobile Homes (2005 NEC). An on site inspection will  be advisable to see what size service is attached to your trailer, if it hard wired or, if it is cord and plug. Be safe.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="re_generator_p_cord_1102008"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>RE: Generator P-cord 1/10/2008</B></div> <div> <B>Dear Mr. Stubbs:</B></div> <bR> <div> <B>Love your site. Has saved me a lot of head scratching to say the least.</B></div> <bR> <div> <B>In your response to:</B></div> <div> <B>"</B><A HREF="id45_generator_power_cord_size.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U><B>Generator power cord size 4/23/2005</B></U></A><B> </B></div> <div> <B>I recently purchased a 20KW towable diesel generator. My home is ...etc"</B></div> <div> <B>.......</B></div> <div> <B>You responded: "The only way you can exceed the 60 amps is to hard wire</B></div> <div> <B>to the generator. 20,000 / 240 = 83 amps X 125% (for continuous duty) =</B></div> <div> <B>104 amps, which will equal a # 2 copper or a 1/0 aluminum in the 75</B></div> <div> <B>degree column. The allowable overcurrent device will be 110 amps."</B></div> <bR> <div> <B>It left me wondering if the requester could not have met the safety and</B></div> <div> <B>his functional needs using a Pin/Sleeve configuration and some heavy</B></div> <div> <B>flex wire (known as "mine wire" or super-SOOW to some)</B></div> <bR> <div> <B>As an example; </B></div> <bR> <div> <B>>Hubbell #HBL3100PS2W / HBL3100RS2W combination is only for 100amp</B></div> <div> <B>single phase, but much larger ones are available for 3PH use up to at</B></div> <div> <B>least 600Amps 3PH</B></div> <div> <B>>General Cable #81663.99.01, 2AWG, 3C CABLE is only for 100Amp as for</B></div> <div> <B>the P/S set above, but larger stock is available and it is basically</B></div> <div> <B>just bundled welding wire so it is still flexible due to the very fine</B></div> <div> <B>copper used.</B></div> <bR> <div> <B>This stuff is used mostly for temporary installs for big music concerts,</B></div> <div> <B>political rally's, and well in mines I guess. We have use a bit of it to</B></div> <div> <B>make UPS's easy to quickly replace when that was a critical criteria.</B></div> <bR> <div> <B>The only big bite is the cost... even for the single phase parts at</B></div> <div> <B>100A, a plug / receptacle pair will be $500 a set and the wire is $6 per</B></div> <div> <B>foot plus a lot for shipping.</B></div> <bR> <div> <B>Just thought it might lead well-heeled readers to potential solutions if</B></div> <div> <B>they must have to have other than hard-wired installations for</B></div> <div> <B>generators at 100A or larger...</B></div> <bR> <div> <B>Cheers</B></div> <div> <B>Kerry</B></div> <bR> <div> The cables you have sent to me are exceptional for<B> temporary</B> use like you have specified, but for the home it is not practical. Flexible cords and cables, because of the nature of their use, are not considered to be wiring methods. Wiring methods are covered in Chapter 3 of the Code. </div> <div> I will refer you to Article 400 Flexible Cords and Cables; and 400.7 (uses permitted), 400.8 (uses not permitted). Your generator is fixed and located at a dwelling.</div> <bR> <div> <B>400.1 Scope.</B></div> <div> <I>This article covers general requirements, applications, and construction specifications for flexible cords and flexible cables.</I></div> <bR> <div> <B>400.2 Other Articles.</B></div> <div> <I>Flexible cords and flexible cables shall comply with this article and with the applicable provisions of other articles of this Code. </I></div> <bR> <div> <B>400.3 Suitability.</B></div> <div> <I>Flexible cords and cables and their associated fittings shall be suitable for the conditions of use and location.</I></div> <bR> <div> <B>400.7 Uses Permitted.</B></div> <div> <I>(A) Uses. Flexible cords and cables shall be used only for the following:   </I></div> <div> <I>(1)     Pendants </I></div> <div> <I>(2)     Wiring of luminaires (fixtures) </I></div> <div> <I>(3)     Connection of portable lamps, portable and mobile signs, or appliances </I></div> <div> <I>(4)     Elevator cables </I></div> <div> <I>(5)     Wiring of cranes and hoists </I></div> <div> <I>(6)     Connection of utilization equipment to facilitate frequent interchange </I></div> <div> <I>(7)     Prevention of the transmission of noise or vibration </I></div> <div> <I>(8)     Appliances where the fastening means and mechanical connections are specifically designed to permit ready removal for maintenance and    repair, and the appliance is intended or identified for flexible cord connection </I></div> <div> <I>(9)     Data processing cables as permitted by 645.5 </I></div> <div> <I>(10)   Connection of moving parts </I></div> <div> <I>(11)   Temporary wiring as permitted in 527.4(B) and 527.4(C)</I></div> <bR> <div> <B>400.8 Uses Not Permitted.</B></div> <div> <I>Unless specifically permitted in 400.7, flexible cords and cables shall not be used for the following:   </I></div> <div> <I>(1)     </I><FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><I>As a substitute for the fixed wiring of a structure </I></FONT></div> <div> <I>(2)     Where run through holes in walls, structural ceilings, suspended ceilings, dropped ceilings, or floors </I></div> <div> <I>(3)     Where run through doorways, windows, or similar openings  </I></div> <div> <I>(4)     Where attached to building surfaces  </I></div> <div> <I>(5)     Where concealed by walls, floors, or ceilings or located above suspended or dropped ceilings </I></div> <div> <I>(6)     Where installed in raceways, except as otherwise permitted in this Code</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="double_wall_oven_11162007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Double wall oven 11/16/2007</B></div> <div> <B>I have a question for you…</B></div> <div> <B>I am installing a double wall oven, I have placed 8/3 romax cable through EMT piping because it is outside of the house. The wall oven to the junction box is about 30 feet. Is this safe?</B></div> <bR> <div> I hope you read Article 334-10 uses permitted for type NM (romax). NM is approved for exposed or concealed work in normally dry locations. You also mentioned 8/3 romax cable, but not an equipment ground. If it is in violation of code, then I will not conceder it safe.</div> <bR> <div> <B>334.10 Uses Permitted.</B></div> <div> <I>Type NM, Type NMC, and Type NMS cables shall be permitted to be used in the following:  </I></div> <div> <I>(1)     One- and two-family dwellings. </I></div> <div> <I>(2)     Multifamily dwellings permitted to be of Types III, IV, and V construction except as prohibited in 334.12. </I></div> <div> <I>(3)     Other structures permitted to be of Types III, IV, and V construction except as prohibited in 334.12. Cables shall be concealed within walls, floors, or ceilings that provide a thermal barrier of material that has at least a 15-minute finish rating as identified in listings of fire-rated assemblies. </I></div> <div> <I>(4)     Cable trays, where the cables are identified for the use.</I> </div> <div> <I>(A) Type NM. Type NM cable shall be permitted as follows:</I><I>   </I></div> <div> <I>(1)     For both exposed and concealed work in normally dry locations except as prohibited in 334.10(3). </I></div> <div> <I>(2)     To be installed or fished in air voids in masonry block or tile walls </I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="own_general_contractor_1152007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Own General Contractor 11/5/2007</B></div> <div> <B>I am acting as my own general contractor on a new home project and am installing a 300 amp service about 285 feet long underground using 350 mcm ( cables) +one ground. Does code require pull boxes? I received ok on trench inspection of which I oversized the pvc to 4 inch. Now that it is in ground the town inspector says after fact I should have installed pull boxes. DANNY</B></div> <bR> <div> Unless your State or local municipality has an ordinance, this is not a code violation. A pull box is only required if your bending radius is greater than 360 degree between equipment or enclosures. It would be impractical to install an underground box that would have to be accessible in the future. I'm not sure where you are located, but most power companies install the underground cable to single phase services. Check with your local power company.</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="smoke_detector___arc_fault_1132007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Smoke detector & Arc-fault 11/3/2007</B></div> <div> <B>Do smoke detectors have to be arc fault protected. Everything I find refers to NEC 210.12. But then I find NEC 210.12 deleted. </B></div> <div> <B>So if and where would it be found in the new NEC 2005 or 2008 code book </B></div> <div> <B>Thank you for you help. </B></div> <div> <B>Bernie</B></div> <bR> <div> 210.12 was not deleted at all. You must have a page missing out of your code book.</div> <bR> <div> Unfortunately, the smoke detectors have to be Arc fault protected because of the wording. Since the smoke detector is an <B>outlet</B> in the bedroom, it is required to be arc fault protected. The wiring in the smoke detector junction box can also arc.</div> <bR> <div> <B>210.12 Arc-Fault Circuit-Interrupter Protection</B>.</div> <div> <I>(A) Definition</I><I>. An arc-fault circuit interrupter is a device intended to provide protection from the effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-energize the circuit when an arc fault is detected. </I></div> <div> <I>(B) Dwelling Unit Bedrooms.</I><I> </I><FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><I>All branch</I></FONT><I> circuits that supply 125-volt, single-phase, 15- and 20-ampere </I><FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><I>outlets </I></FONT><I>installed</I><I> in dwelling unit </I><FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><I>bedrooms</I></FONT><I> shall be protected by an arc-fault circuit interrupter listed to provide protection of the entire branch circuit.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="copper_or_alum_10162007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Copper or alum 10/16/2007</B></div> <div> <B>Our community uses the 2002 NEC requirements. My house was built 1 year ago and before our 1 year warranty was up</B></div> <div> <B>I had a home inspection. The inspector noticed that the feeder circuit to my range was an 8 ga aluminum wire. He said that</B></div> <div> <B>an 8 ga copper would be ok, but if it is aluminum it needs to be a 6 ga wire. The sub that did the work said they did it to code.</B></div> <div> <B>The building inspector at one time agreed completely with my inspector and now is waffling. Who is right. </B></div> <div> <B>Thanks</B></div> <div> <B>Chris </B></div> <bR> <div> The last inspection is the correct one. I'm not sure what was on the inspectors mind for the first inspection and your sub didn't comply with the code. The conductor size did not change because of the adoption of code book. Your violation may be based on the demand of the conductors overcurrent device. If your receptacle and overcurrent device is rated at 50 amps and you are in the 75 degree column, then the # 8 copper is good for 50 amps and the #8 aluminum is only good for 40 amps. (Table 310.16). If you keep the #8 aluminum as your branch circuit, you will have to reduce the overcurrent device to 40 amps or increase the conductor to #6 aluminum. </div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="upgrading_a_sub_panel_1062007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Upgrading a sub-panel 10/6/2007</B></div> <div> <B>Hi Mr Stubbs, I have a 1960 ranch house with updated 100 amp service that has a 6 slot add on sub panel . It is feed by a 2 pole 60 amp breaker and look's to be wired with 6 or 8 gauge wire. I want go to a larger panel because I plan on remodeling my basement and possibly adding some low voltage lighting outside as well. My local home center has a GE 125 amp main lug panel with 20 spaces which I would like to use but everyone say's that you can't put a 125 amp main lug sub panel onto the 100 amp service. Is this true? </B></div> <div> <B>your reply would be greatly appreciated,</B><B> </B></div> <div> <B>sincerely, Paul</B></div> <bR> <div> Mr. everyone is wrong. This not a code violation. You can put a 400 amp main lug sub panel fed by a 60 amp breaker if you choice too. If you don't exceed the demand of the 60 amp overcurrent device you don't have a problem. Now, it won't be practical to install it that way. Most manufactures rate the MLO panels higher than the overcurrent device supplying it. Bare in mind that the listing on the panels, disconnects and service equipment are set by the standard overcurrent ratings in article 240.6 that will accommodate multiple settings in the enclosure.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="gfci_in_ungrounded_homes_9142007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>GFCI in ungrounded homes 9/14/2007</B></div> <div> <B>Hey Ed, </B></div> <div> <B>Great web site </B></div> <div> <B>Have you ever come across a home with no ground in the wire, such as knob and tube wiring, and had to install a GFCI outlet on this?? If you install a GFCI without a ground on it, it will not function properly. How do you get the GFCI to work properly without a ground?? </B></div> <div> <B>Thanks Ken </B></div> <bR> <div> Yes I have, GFCI protection goes back to  the 1971 NEC. I started as an electrician in 1966 and ground faults were new to me.</div> <div> Section 210.8 is the main rule for the application of ground-fault circuit interrupters (GFCI's). Since the introduction of the GFCI in the 1971 Code, these devices have proved to their users and to the electrical community that they are worth the added cost during construction or remodeling. Published data from the Consumer Product Safety Commission show a decreasing trend in the number of electrocutions in the United States since the introduction of GFCI devices.  </div> <div> The picture below shows a typical circuit arrangement of a GFCI. The line conductors are passed through a sensor and are connected to a shunt-trip device. As long as the current in each conductor remains equal, the device remains in a closed position. If one of the conductors comes in contact with a grounded object, either directly or through a person's body, some of the current returns by an alternative path, resulting in an unbalanced current. The toroidal coil senses the unbalanced current, and a circuit is established to the shunt-trip mechanism that reacts and opens the circuit. Note that the circuit design does not require the presence of an equipment grounding conductor, which is the reason 406.3(D)(3)(b) permits the use of GFCI's as replacements for receptacles where a grounding means does not exist. </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1ab900b0.png" border=0 width="400" height="267" ALIGN="BOTTOM" HSPACE="0" VSPACE="0">  </div> <bR> <div> see <FONT SIZE="3" COLOR="#000000" FACE="Arial" ><A HREF="id45_grounded_receptacle_4202004_.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U><B>Grounded Receptacle 4/20/2004</B></U></A></FONT></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="daisy_chain_8292007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Daisy chain 8/29/2007</B></div> <div> <B>Hello,</B></div> <div> <B>My question is :</B><B>based on the NEC are you allowed to daisy chain the lighting connections on 2x4 lay in fixtures in a suspended ceiling, with MC cable with a ground wire in the MC cable can you use more than a 6’ whip. Can you reference any applicable codes. </B></div> <bR> <div> Yes you can. MC (metal clad) cable is a manufactured product that comes under the wiring method of article 330 of the NEC. also meet 410.32.</div> <div> The provisions of 410.32 facilitate convenient switching and supply circuit arrangements for a physically continuous row of luminaires or a row that is made continuous via the wiring method. A single two-wire or a single multiwire branch circuit supplying the luminaires is permitted to be run through the continuous row(s), and the luminaires are not required to be listed for use as a raceway. An additional two-wire branch circuit is permitted to be run through these luminaires. This circuit may supply only luminaires in the connected row(s) and is commonly employed to switch night lighting as an energy conservation method. </div> <bR> <div> <B>410.32 Wiring Supplying Luminaires (Fixtures) Connected Together.</B></div> <div> <I>Luminaires (fixtures) designed for end-to-end connection to form a continuous assembly, or luminaires (fixtures) connected together by recognized wiring methods, shall be permitted to contain the conductors of a 2-wire branch circuit, or one multiwire branch circuit, supplying the connected luminaires (fixtures) and need not be listed as a raceway. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires (fixtures) shall also be permitted.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="derating_conductors_8242007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Derating conductors 8/24/2007</B></div> <div> <B>I have a question, if I have a parallel run of conductors feeding a disconnect (1200 Amp) do I have to use table 310.15(B)(2)(a), I will only have three hot's and a ground in each conduit?</B></div> <div> <B>I know I have to use the Temp correction table, but the adjustment factor has me confused.</B></div> <bR> <div> Using Table 310.15(B)(2)(a) depends on the use of the grounded conductor and if you install more than one set of parallel conductors in a raceway. Normally the grounded conductor ahead of the main is not counted as a current carrying conductor because of it's full size for the unbalanced load has and no diversity. The conductors can be 100 %</div> <div> The factors in the second column of Table 310.15(B)(2)(a) are based on no diversity, meaning that all conductors in the raceway or cable are loaded to their maximum rated load. For load diversity, the user is directed to Annex B. Bare in mine that the Annex is not a code requirement but merely  for information only.</div> <bR> <div> <B>"This annex is not a part of the requirements of this NFPA document but is included for informational purposes only."</B></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="troff_872007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Troff 8/7/2007</B></div> <div> <B>I am looking for the formula to size troffor wireway for a service 4 sets of 3/0 3 phase 4 wire and 2 sets of 1/0 3 phase 4 wire</B></div> <bR> <div> The troffor wireway size is based on the direction on which way the raceway(s) enter and exit the troffor; and the size and amount of conductors installed. You didn't supply me with enough information if this a hot Troff with six mains and no raceway sizes or conductor type. I will assume this is what you have:</div> <div> The 4 sets of 3/0 will require 4-2 inch raceways and the 2 sets of 1/0 will require 2-1 1/2 inch raceways.</div> <div> The largest raceway is 2 inches x  6 =12 inches for the depth of the Troff for the six main and 21 inches wide for the six raceways to the mains. The other information I don't have is the power companies size and number of raceways that will be installed. Their size could change the height of the troffor. Look at article 314.16.</div> <div> <B>314.16 Number of Conductors in Outlet, Device, and Junction Boxes, and Conduit Bodies.</B></div> <div> Boxes and conduit bodies shall be of sufficient size to provide free space for all enclosed conductors. In no case shall the volume of the box, as calculated in 314.16(A), be less than the fill calculation as calculated in 314.16(B). The minimum volume for conduit bodies shall be as calculated in 314.16(C).</div> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1ac5b9b0.png" border=0 width="347" height="411" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> On a straight pull, the raceway sizes are run from one side to the opposite wall and you just add up each raceway size to get the height or width of the troffor and the length is based on the largest raceway multiplied by 2. (see diagram above)</div> <bR> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1ad5dd90.png" border=0 width="349" height="473" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> For an angle pull, you have to pick the largest raceway and multiply it by 6, then add each raceway for the total size in both directions. (see diagram above).</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="not_ul_listed_862007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Not UL listed 8/6/2007</B></div> <div> <B>I have a question at my friends cabin we have 3 buildings one has its own 200 amp main service and a 200 amp off peak main, the other 2 buildings have 150amp services and 150 amp off peak panels. We have 2 meters out on a back board and a 50k transformer installed by the power company. I ran the feeds underground through 2" scheduled 80 pvc conduits these 6 conduits come up into a 24"H X 24"W X 12"D nema 4 box with backplane. They feed up from the bottom. In the left half of the box there 3 insulated standoffs rated for 600 volts they have 5/8" threaded bronze rods sticking out about 3" from each. The 400 amp meter panel is next to this "junction" box with about 3 foot 350mcm cable running from the meter base to these 3 standoffs. The feeder cables to all the building mains are 0/4 aluminum terminated with Al/CU lugs </B><B>these are stacked on each respective stud with washers and large face nuts. The off peak is 200 amp meter, and the hookup is the same as above just on the right half of the panel backplane. Well as you may have guessed it blew the inspectors fuses the minute he saw it and it was tagged. problem is his attitude has been poor and he wont say what he doesn't like we just get told "not my job to make a punch list of your violations" "get a union electrician in here he'll know what is wrong" well I would like to at least know what he doesn't like so we can try to fix things but the only thing he said is "that rig ain't UL listed, it fails". well the enclosure is UL the standoffs are UL and the lugs are T&B but how would you get a UL listing on a junction box as a whole unit? My questions to you aren't to "stick it to him" but maybe if you could tell me what you think we did wrong with this approach to connect these feeds to a single meter we can fix it.</B></div> <bR> <div> Without a picture of what you have, I cannot tell the overall problem that the inspector saw. I am getting a picture that you have the service lateral conductors in the same 24 x 24 x12 box as the feeder conductors. I'm not sure about the other electrical violations that the Inspector found. I am sure you also have the answer by now.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="add_another_sub_panel_862007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Add another sub-panel 8/6/2007</B></div> <div> <B>Hi, I'm planning an addition to my house. This will add 1 bedroom and a separate HVAC system for that end of the house. I currently have 200 amp service with 2 additional sub-panels. 1 for pool equipment and 1 for addition to kitchen and upstairs. Main panel is maxed out. Can I add another sub-panel (100 amp) for the new addition? </B></div> <div> <B>Thanks, </B></div> <div> <B>Dan</B></div> <bR> <div> See below.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="sub_panels_7252007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Sub panels 7/25/2007</B></div> <div> <B>Hello Mr. Stubbs,</B></div> <div> <B>I really enjoy your website and thank you for the wonderful information, you are certainly making the electrical trade safer. Whenever subpanels are to be installed Section 240.21 B or C should be followed. Is it permissible to install a double-pole breaker in a service panel and feed a sub-panel and then in the sub-panel install a double-pole breaker and feed another sub-panel or should a feeder be installed from the service panel and it feeds the two sub-panels? If it is permissible to daisy-chain the panels like this what is the correct terms for this feeders or sub-feeders? How can Section 240.21 be followed if the panels are daisy-chained?</B></div> <bR> <div> <B>Thank you</B></div> <bR> <div> There are only three types of overcurrent devices used out of the NEC. Service main, feeders and branch circuits. Article 240.21 apply's to the <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>tap rules after the main</B></FONT> for a feeder or branch circuit; and taps ahead of the main. Unless you are installing equipment that needs the <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>10 and 25 ft tap rule</B></FONT>, you'll only be dealing with feeders to feed subpanel after subpanel after subpanel, etc. Two rules to follow: The demand on the circuit cannot exceed conductor size or the double-pole breaker that you install. The total demand cannot exceed the conductor size to the first feeder and the first main up stream.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="hot_tub_7242007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Hot tub 7/24/2007</B></div> <div> <B>Ed, </B></div> <div> <B>I have a #6-3 with ground running to my hot tub. It is on a 60 amp breaker. Is this breaker over sized for the wire that is being used. It is copper wire. Is the rating different from copper to aluminum. </B></div> <div> <B>Thanks </B></div> <div> <B>Ken</B></div> <bR> <div> The protection of the conductor is OK, but you need to take a look at the listing and label on the hot tub and see what the maximum overcurrent device should be.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="uf_b_for_pool_pump_7242007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>UF-B for pool pump 7/24/2007</B></div> <div> <B>Can UF-B cable be used for a pool pump ? </B></div> <div> <B>Regards, </B></div> <div> <B>Russ</B></div> <bR> <div> No! Only wiring methods allowed in article 680.21</div> <div> <B>680.21 Motors.</B></div> <div> <B>(A) Wiring Methods.</B></div> <div> <B>(1) General.</B> <I>The branch circuits for pool-associated motors shall be installed in rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit, or Type MC cable listed for the location. Other wiring methods and materials shall be permitted in specific locations or applications as covered in this section. Any wiring method employed shall contain a copper equipment grounding conductor sized in accordance with  250.122 but not smaller than 12 AWG.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="3_ton_ac_unit_7162007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>3 Ton AC unit 7/16/2007</B></div> <div> <B>I have been told to get #8 3-wire/ ground, to wire the 3 ton AC Unit from the Disconnect switch at the side of my House, which is about 9 Feet away. When I went to the local Home Improvement store, They told me to just use the #8 Romex(or Black coated) 2-wire/ground and just use the bare ground as the Neutral wire. This seemed odd, because the Ground Wire looked Smaller in diameter than the other two #8 wires. Can you use the smaller ground as a neutral and just not ground the 3 ton AC Unit? What does the NEC code 2005 say about this? Which Wire should be used according to code in Michigan? </B></div> <div> <B>Thank you, Joel</B></div> <bR> <div> Well Joe, you don't need the three wire with ground because there is no neutral on the AC unit. The person at the home improvement store was correct about the 2-wire/ground. The equipment ground is sized according to the overcurrent device, which is allowed to be smaller.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="sub_panel_location_7112007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Sub panel location 7/11/2007</B></div> <div> <B>I want to install a 100A subpanel in my detached garage and have the following questions:</B></div> <bR> <div> <B>1) Can I place the panel on the inside of the front wall, where I have 41 inches between the garage door opening and a front corner.</B></div> <div> <B>Is the 3x3 ft clear space in front of the panel rule, be considered like 1.5 ft from center of the panel to the left and right of the panel and</B></div> <div> <B>3 ft in front of the center of the panel ? </B></div> <div> <B>2)</B><FONT SIZE="1" COLOR="#0000FF" FACE="arial" ><B> </B></FONT><B>Can the “swing” of the service door infringe on the 36”x36” clear area required in front of the panel?, and how much ?</B></div> <bR> <div> <B>Thanks in advance! </B></div> <div> <B>This is a great site!</B></div> <bR> <div> <B>Calin</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <bR> <div> As long as you have 3 foot clearance in front of your panel and a minimum 30 inch wide space, you will be OK. The swinging door will not be a problem.</div> <div>  <IMG SRC="14690fe0.png" border=0 width="400" height="254" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <A HREF="#subpanel_in_detached_garage_272008" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U>Back to Question Subpanel in detached garage 2/7/08</U></A></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="400_amp_service_panel_7102007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>400 amp service panel 7/10/2007</B></div> <div> <B>I have just built a 1440 sq. ft. steel building and I will be building an 1800 sq. ft. house within 30 ft. of this metal building. I have asked the power company for suggestions on which type of electrical service would be best for me. They have recommended I use a 400 amp residential service panel. The power co. said I could install the 400 amp panel in the metal building and then I could come out of this panel for a 200 amp service for the house I will be building. Their reason for this is I would not have to make another electric wire run from the transformer (sits on ground) to the house, only have to run it from metal building to the house. I have checked with local electrical supply dealers and they can not give me the information I need for a 400 amp service panel. I do plan to use an electrician to set up the service panel. Could you describe to me exactly how the 400 amp panel would be used for 200 amp service to my metal building and 200 amp service for my house. The electric service will be underground.</B></div> <bR> <div> <B>Thanks, Bill</B></div> <bR> <div> You are asking me to basically design your electrical system. I'm sorry, but you will have to get your electrician to map it out. I don't mind answering code questions, but this is not one.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="hot_wires_7102007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Hot wires 7/10/2007</B></div> <div> <B>I was shocked because the electrical contractor had pre striped the wires, which were sticking out of the electrical box about 3 to 4 inches. The outlet was 9 feet above the floor and I was pulling cat 5 and cat 6 computer cables at that height,which was going to be above the false ceiling. Is there a electrical code about leaving a circuit hot with exposed wires that were striped and the circuit breaker was still on? Thanks Garry</B></div> <bR> <div> Yes! OSHA. You have to be careful around electrical wiring. Don't assume circuits are not hot because they being installed. I have no clue what the electrician was thinking with the hot circuits. I don't let my crew even install the breakers before the equipment is installed. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="gfi_gangs_792007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>GFI gangs 7/9/2007</B></div> <div> <B>I've tried searching the NEC and had no luck.</B></div> <bR> <div> <B>I'm constructing an addition on a residence and the subject of home-run GFCI's has come up.</B></div> <bR> <div> <B>In my layman's experience it always seemed "the code" says that kitchens, baths and outdoor receptacles _all_ must be GFCI.</B></div> <bR> <div> <B>But a little research/knowledge shows that as long as a GFCI is first on a circuit -- it protects the entire circuit.</B></div> <div> <B>Other information shows that GFCI's must be home-runs (i.e. one-GFCI, one circuit)</B></div> <bR> <div> <B>Which is/are correct?</B></div> <div> <B>A) "home-run" circuits are required in those wet locations and may not be ganged.</B></div> <bR> <div> <B>B) wet locations may be ganged as long as the first receptacle on the circuit is GFCI. subsequent receptacles may be ordinary duplex</B></div> <bR> <div> <B>C) over-zealous code-enforcers/state legislators like the idea of a GFCI on every counter-top -- even if they are superfluous on a ganged circuit. </B></div> <div> <B>And electricians like it too because most homeowners don't realize the only material cost is an extra $1 for the GFCI and no addition for labor on a ganged circuit -- only the ability to read and understand "line" and "load".</B></div> <bR> <div> <B>Are interior wet locations treated differently than exterior? (Aside from the little flip covers :))</B></div> <bR> <div> <B>If there is a NEC chap/verse on the above please feel free to direct me to it.</B></div> <bR> <div> <B>Also, can state/local codes take precedence? If so, do you have any idea (on-line) where I can view a (specific) state/municipality? thank you very much for any light you can shed (groan, sorry), Bryan</B></div> <bR> <div> My answer may be a little late, but it will be correct.</div> <div> Article 210.8 covers all of your question on GFCI protection. "B" is the most correct answer that you have. GFCI protect the entire circuit if it is a breaker and if you install a GFCI receptacle at the first outlet, it protects the rest of the circuits down stream (dry or wet locations). Also read article 406.3 for a better understanding of replacing receptacles.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="recept_distance_to_tub_792007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Receptacle distance to tub 7/9/2007</B></div> <div> <B>Ed,</B></div> <div> <B>I am building a new home and the contractor tells me that you can not have a receptacle close to a tub that you can reach while in the tub. It has been my understanding that it had to be a GFCI receptacle but there was no distance limitation to sink or a tub.</B></div> <div> <B>Wes</B></div> <bR> <div> Your understanding is correct. That reaching distance only applies to hot tubs and spa tubs in article 680. All wet or damp locations in dwellings shall have GFCI protection. The receptacle or switch can be located right next to the tub or sink.</div> <div> 210.8 Ground-Fault Circuit-Interrupter Protection for Personnel.</div> <div> (A) Dwelling Units. All 125-volt, single-phase, 15- and 20-ampere receptacles installed in the locations specified in (1) through (8) shall have ground-fault circuit-interrupter protection for personnel.   </div> <div> (1)     Bathrooms</div> <div> <IMG SRC="1aa91e00.png" border=0 width="401" height="480" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> This picture may not show the receptacle next to the tub, but think about the efficiency apartments with small bathrooms. Do you know of any receptacle on the outside of the bathroom?</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="trench_wire_depth_792007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Trench wire depth 7/9/2007</B></div> <div> <B>what is the code depth for lead wires from a meter on a pole to the entrance of a home. We have a 2nd home in South Dakota and I uncovered my wires, 2 -#4 alum. while digging in my sideyard last weekend. The two wires were 17" down to the center of the wires. I would have thought they would be at least 24" down. I called the electrical contractor who did the trenching (in 2003)and he said the code is 18" !! We have a 200 amp service, the soil is very rocky and I have heard a lot of people in the area have lost power due to breaks-oxidized lines. I thought electrical was buried between 24</B></div> <div> <B>and 30 inches in depth?? </B></div> <div> <B>Thank your for your response .</B></div> <bR> <div> I hope your electrician installed direct burial cables. Unless you have a local ordinance in South Dakota, Article 300.5 show a minimum of 18 inches depth will be required on residential dwellings. You as the owner could have asked the contractor to bury it deeper. If it was inspected by your local authority, it met code. </div> <bR> <div> <B>300.5 Underground Installations.</B></div> <div> <B>(A) Minimum Cover Requirements</B>. Direct-buried cable or conduit or other raceways shall be installed to meet the minimum cover requirements of Table 300.5.</div> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1a990720.png" border=0 width="400" height="370" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="electrical_meter_location_752007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Electrical meter location 7/5/2007</B></div> <div> <B>We now have a new electrical utility company which claims that they can install the meter loop, mast and wiring, meter box, and service disconnect. They also have been forcing customers to go along with poles being set in alleys, with meter boxes and disconnects installed on these poles. Consumers are complaining that they don't want there meters and disconnects located at this location, but the utility says they have no choice. As electrical inspector, I contend that installation of this loop, meter box, mast and disconnect is electrical work, and falls under my jurisdiction. Can you enlighten me on this please???</B></div> <bR> <div> There are two problems with this question.</div> <div> (1) I have no clue what utility company you are asking about.</div> <div> (2) This sounds more like a legal question then a code question. You need to work this out with your local authority.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="hot_tub_heads_up_732007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Hot tub heads up 7/3/2007</B></div> <div> <B>Dear Mr. Stubbs,</B></div> <div> <B>Unbelievable web site! I'm not sure which is more impressive, your knowledge or your willingness to share it!</B></div> <div> <B>We will be having a hot tub installed on a concrete patio, which is adjacent to our house and fairly narrow, so the tub will be within 5 feet of exterior wall of house. The conduit will emerge close to the tub. Am I correct that the conduit should be run along the wall of the house to a distance at least  5 feet from the tub, and a disconnect switch installed there? Then flexible conduit from the disconnect back to the tub? Any height requirements for disconnect switch, or for distance from the concrete slab for horizontal run of conduit? Is PVC conduit acceptable? 6 GA copper wire, 3 conductors and ground, 1" conduit, 50 amp breaker? Any preference for GFCI at breaker, or at disconnect switch? Any other tips or things to watch for regarding hot tubs?</B></div> <bR> <div> <B>Thanks again, and God bless! Gene</B></div> <bR> <div> Thank you for your comments on my web site. It's a dirty job, but somebody got to do it. </div> <div> Hot tubs and pools come under article 680.</div> <div> I'll answer the best way I can. You are correct on the distance of 5 feet for the disconnect switch. Panelboards, time clocks, pool light switches, and so on, where located not less than 5 ft horizontally from the inside walls of a pool without a solid fence, wall, or other permanent barrier, must be out of reach of persons who are in the pool, thereby preventing contact and possible shock hazards. The raceway is not a problem. All switches shall comply with article 404.8. The maximum height of a switch (Disconnecting means) is 6' 7" from deck level. PVC is acceptable; and the conductors and overcurrent device shall be based on the listing and label of the equipment. If there is no listing, you have to go to article 430-motors.</div> <bR> <div> <B>680.22 Area Lighting, Receptacles, and Equipment</B>.</div> <div> <B>C) Switching Devices</B>.<I> Switching devices shall be located at least 1.5 m (5 ft) horizontally from the inside walls of a pool unless separated from the pool by a solid fence, wall, or other permanent barrier. Alternatively, a switch that is listed as being acceptable for use within 1.5 m (5 ft) shall be permitted.</I></div> <div> <B>404.8 Accessibility and Grouping.</B></div> <div> <B>(A) Location</B><I>.</I><I> All switches and circuit breakers used as switches shall be located so that they may be operated from a readily accessible place. They shall be installed so that the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than 2.0 m (6 ft 7 in.) above the floor or working platform.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wires_through_4_units_6242007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wires through 4 units 6/24/2007</B></div> <div> <B>I live in a four unit town home and each person owns the unit and property it's built on. The electrical is located at one end unit and there are four meters at that location with the 240 cable running thru the basement ceiling of unit A-B-C- to get to my unit-C-. None of this cable is run thru conduit and is open and exposed, so this means that unit A has everyone else's power running thru his basement. </B></div> <div> <B>If the owners of A-B-C- wish to remodel their basement (as some have done) then if I lose power ( maybe a rat chewed thru line-etc. and shorted it out) I would need to get permission from them to tear out their ceiling to try to locate the problem. Also it is possible that someone in either of these units could tap into my line and take electrical from my power illegally. Although I am not an electrician this just does not seem like a legal installation that meets the code, because anyone could inadvertently cut thru that high power line since it is not in conduit. In your opinion does this description meet the NEC code? </B></div> <div> <B>Charles</B></div> <bR> <div> You are correct in your analysis on the cables passing through each unit. Townhome's are classified as separate building or structure. I don't know if this is a new building or existing. Contractors and owners have renamed the old units from multifamily to Townhome. At that time, there was one owner, one roof, etc. Changing the name of the unit did not change the existing wiring method being used. If the units were sold as fire separated Townhome, the requirements of article 230.3 shall apply.  Service conductors are permitted to be installed along the exterior of one building to supply another building. However, service conductors supplying a building are not permitted to pass through the interior of a building. Each building served in this manner is required to be provided with a disconnecting means for all ungrounded conductors, in accordance with Part VI, Service Equipment—Disconnecting Means. If the local jurisdiction comply's with the building ordinance on new construction, you will not have this situation.</div> <bR> <div> <B>230.3 One Building or Other Structure Not to Be Supplied Through Another</B>.</div> <div> <I>Service conductors supplying a building or other structure shall not pass through the interior of another building or other structure.</I></div> <div> <B>230.6 Conductors Considered Outside the Building.</B></div> <div> <I>Conductors shall be considered outside of a building or other structure under any of the following conditions:   </I></div> <div> <I>(1)     Where installed under not less than 50 mm (2 in.) of concrete beneath a building or other structure </I></div> <div> <I>(2)     Where installed within a building or other structure in a raceway that is encased in concrete or brick not less than 50 mm (2 in.) thick</I></div> <div>  <IMG SRC="1a690da0.png" border=0 width="400" height="218" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="checks___balance_ajh_6182007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Checks & balance AHJ 6/18/2007</B></div> <div> <B>Who provides the check and balance over the AHJ? What is keeping the AHJ from abusing their power? Is their a rules of service?</B></div> <div> <B>Thank</B></div> <div> <B>Jim  </B></div> <bR> <div> The local courts and good supervision. Everybody has a boss.  Click here <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>"</B><A HREF="id25.htm" TARGET="_top" TITLE="The Authority Having Jurisdiction"><U><B>The Authority Having Jurisdiction"</B></U></A><B> </B></FONT></div> <div>   </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="bonding_screw_6182007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Bonding screw 6/18/2007</B></div> <div> <B>I am getting ready to upgrade my service at my house from an old 60 amp fuse box to an 200 breaker panel. the question I have is. do I need to bond the neutral to the box with the bonding screw or not? when do you use the screw and when do you not ?</B></div> <bR> <div> Yes you do on the first main. This is call the main bond screw which is supplied with the main panelboard or the main service disconnect. The neutral conductor (grounded conductor) shall be bonded in the main which is part of the grounding electrode system. As I always teach in my classes and to the contractors, grounding is the most important part of the electrical system for life safety at 600 volts nominal or less. This is what the general public has access too. If your equipment is properly grounded, you and the equipment will be potentially safe from a serious shock and ground fault. I call it the silent killer. You just can't see it coming. You don't know until you touch it.</div> <bR> <div> <B>250.28 Main Bonding Jumper.</B></div> <div> <I>For a grounded system, an unspliced main bonding jumper shall be used to connect the equipment grounding conductor(s) and the service-disconnect enclosure to the grounded conductor of the system within the enclosure for each service disconnect.</I></div> <div> <B>(A) Material</B>.<I> Main bonding jumpers shall be of copper or other corrosion-resistant material. A main bonding jumper shall be a wire, bus, </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I><B>screw,</B></I></FONT><I> or similar suitable conductor.</I></div> <div> <B>(B) Construction.</B><I> Where a main bonding jumper is a </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I><B>screw only, the screw shall be identified with a green finish</B></I></FONT><I> that shall be visible with the screw installed.</I></div> <div> <I><IMG SRC="19c89c50.png" border=0 width="393" height="453" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="new_100amp_subpanel_6182007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>New 100amp subpanel 6/18/2007</B></div> <div> <B>I would like to install a new 100amp sub panel in a pole barn,50 feet away from the main 150amp service panel,I have 6 gauge wire,one black one red one white one bare ground,what is the largest amp circuit breaker I can use in the main panel to service the new sub panel with 6 gauge wire? can I use a 100amp breaker ? thank you for your help P/S the 6 gauge wire I have is copper.</B></div> <bR> <div> You are a little short on the information I need. Since you gave me colors, then you must be describing a NM-B cable. This cable cannot be exposed to wet location and only rated in the 60 degree column for ampacity. Table 310.16 shows 55 amps. Article 240.4(B) allows to go to the next size overcurrent device which is 60 amps. You will have to change your wiring method to comply with code. Get with an electrical contractor or your local inspector to see all of your options.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="600_feet_of_wire_6172007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>600 feet of wire 6/17/2007</B></div> <div> <B>Hi,I need a 20 amp ac circuit 600 feet from the panel. What gauge wire do I need to accomplish this task. Thanks</B></div> <bR> <div> Since you only gave me a 20 amp circuit without a load, I will base it on the maximum load allowed. 80% of 20 amps is 16 amps. 600 feet is a long distance for a branch circuit. Is this a commercial location? What voltage are you using? Is this 3 phase or 1 phase? I won't put the voltage drop formula down, but I will give some answers for different voltages. 120 volts is out of the question. That will require a # 2 awg conductor.</div> <bR> <div> Singe phase:</div> <div> 240 v =  #4</div> <bR> <div> Three phase:</div> <div> 208 v = #4</div> <div> 240 v = #4</div> <div> 277 v = #6</div> <div> 347 v = #6</div> <div> 480 v = #6</div> <div> 600 v = #10</div> <bR> <div> The only way the conductor size will decrease is the load decreases.</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="weatherhead_installation_692007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Weatherhead installation 6/9/2007</B></div> <div> <B>Dear Sir, </B></div> <div> <B>I'm planning to upgrade my existing electrical service from 100 to 200 amps...My existing service entrance cable is on a 45 degree angle following the contour of my roof..in which the weather head is mounted also at a 45 degree angle..This question varies from town to town across Massachusetts depending on inspectors on the right way to mount the weather head...Some inspectors expect electricians to mount the weather head at a horizontal position with a goose neck bend ( which to me puts a strain on the wire and looks like hell..and some inspectors let it go at a 45 degree angle...Could you please let me know which is the correct way to install this..And I've heard that they make a UL listed weather head for a 45 degree angle..Have you heard of this? The local supply houses in Western Massachusetts have not..If so where could I get one...This question is talked about between lots of Electricians I know and they say that it depends on which Inspector you have for that given town.,,,,It should be standard Across the State...Take a look around next time you go for a drive I'm not seeing and consistency on this issue.... </B></div> <div> <B>Thanks </B></div> <div> <B>Dave</B></div> <bR> <div> Sometimes we find ourselves debating if something is half full or half empty, are we getting <B>on</B> the bus or <B>in</B> the bus, or why is the president on the voting ballot when your vote doesn't count? This is one of those kind. </div> <div> Let's clear up the reason for a weatherhead. To stop the drainage of water into the raceway and equipment. The NEC only allowed two choices, a raceway or cable. I'll start with the raceway. If you install a raceway vertical or horizontal without a weatherhead, you agree that water can get into the raceway and into the service equipment! Do you agree if I put a 90 degree bend on the horizontal raceway or two 90 degree bends on the vertical raceway, that wound keep the water out of the raceways? That would work except the code did not allow this. Article 230.54 requires a weatherhead.</div> <bR> <div> Now, let's go to the service cable. If you ran the service cable along the inside edge of 4 foot soffit overhang where rain could not reach it and you had a 90 degree bend in it that is facing down, would this work? Yes, but it is not installed by code. According to the picture below, is the gooseneck 45, 90, 120 or 180 degrees? You guessed it. That is why it's called a gooseneck. Not a V-neck, turtleneck or other necks. There were no exceptions or deviations from that article on the gooseneck. If you put a weatherhead on, you are in compliance with code. No angles are mentioned. When you drip loop the service conductors, you have prevented moisture from entering the cable or raceway.</div> <bR> <div> <B>230.54 Overhead Service Locations</B>.</div> <div> (<B>A) Raintight Service Head.</B> Service raceways shall be equipped with a raintight service head at the point of connection to service-drop conductors.</div> <div> <B>(B) Service Cable Equipped with Raintight Service Head or Gooseneck.</B> Service cables shall be equipped with a raintight service head.</div> <div> <I>Exception: Type SE cable shall be permitted to be formed in a gooseneck and taped with a self-sealing weather-resistant thermoplastic.</I>. </div> <div> <B>(F) Drip Loops</B>. Drip loops shall be formed on individual conductors. To prevent the entrance of moisture, service-entrance conductors shall be connected to the service-drop conductors either (1) below the level of the service head or (2) below the level of the termination of the service-entrance cable sheath.</div> <div> <B>(G) Arranged That Water Will Not Enter Service Raceway or Equipment.</B> Service-drop conductors and service-entrance conductors shall be arranged so that water will not enter service raceway or equipment.</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1a890850.png" border=0 width="400" height="389" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wires_in_a_hole_662007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wires in a hole 6/6/2007</B></div> <div> <B>Hi,</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B> </B></FONT></div> <div> <B>Great web site! Just found it today. We are having a new home built. While looking around (almost every day after work) I noticed something that looked funny, which is why I started searching the web. Is there any limit on the number of wires one can stuff through a hole in joists or studs? There are 3/4" holes leading through wall, through the floor and through the joists over head in the basement leading towards the box. It just looks like there are an awful lot of wires crammed together as you get closer to the box. </B></div> <div> <B>Mary</B></div> <bR> <div> The only issue the NEC has is on conductors in raceways and nipples. Since the conductors are in a protective sheathing, and derating is not a factor, it is left up to the electrical contractors since of professionalism to handle the fill. All contractors know how hard it is to pull conductors in a tight hole. Unless this becomes a problem with wiring methods in the future,it will not become a code issue. Bare in mind that the inspector has to look at the work also. If he or she fills uncomfortable with the inspection or sees damaged conductors, they will let the contractor know.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="cable_size_5302007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Cable size 5/30/2007</B></div> <div> <B>I need to extend the cable for my above ground inline heating element some 20 ft to reach the outside receptacle. Looks like I need a piece of 240V 10/3. I have a piece of 600V 10/3 cabtire that is plenty long but can I use the 600V for this purpose rather than spend $50 for the 240V cable? The heater is a 5KW, 23 amp, 50Hz and that my service is a 60HZ. This should not be a problem as there is no motor involved, only an element.</B></div> <div> <B>Thanks.</B></div> <div> <B>Thomas</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <bR> <div> The 600 volt rated cable is OK to use. 600 volts is the maximum allowable use of the cable. Don't spend anymore money.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <B> <A NAME="romax_used_on_swimming_pools_5292007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Romax used on swimming pools 5/29/2007</B></div> <div> <B>Hi Ed: </B></div> <div> <B>The argument here is whether romex with a bare ground can be used as a feeder and a feed to the swimming pool equipment. </B></div> <div> <B>Thank You </B></div> <div> <B>Ray </B></div> <div> <B>PS: I like your site. </B></div> <bR> <div> <B>680.25 Feeders.</B></div> <div> These provisions shall apply to any feeder on the supply side of panelboards supplying branch circuits for pool equipment covered in Part II of this article and on the load side of the service equipment or the source of a separately derived system. </div> <div> <B>(A) Wiring Methods</B>. Feeders shall be installed in rigid metal conduit, intermediate metal conduit, liquidtight flexible nonmetallic conduit, or rigid nonmetallic conduit. Electrical metallic tubing shall be permitted where installed on or within a building, and electrical nonmetallic tubing shall be permitted where installed within a building.</div> <div> Exception: An existing feeder between an existing remote panelboard and service equipment shall be permitted to run in flexible metal conduit or an approved cable assembly that includes an equipment grounding conductor within its outer sheath. The equipment grounding conductor shall comply with 250.24(A)(5).</div> <div> <B>680.21 Motors.</B></div> <div> <B>(A) Wiring Methods.</B></div> <div> <B>4)</B> One-Family Dwellings. In the interior of one-family dwellings, or in the interior of accessory buildings associated with a one-family dwelling, any of the wiring methods recognized in Chapter 3 of this Code shall be permitted that comply with the provisions of this paragraph. Where run in a raceway, the equipment grounding conductor shall be insulated. Where run in a cable assembly, the equipment grounding conductor shall be permitted to be uninsulated, but it shall be enclosed within the outer sheath of the cable assembly.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <B> <A NAME="360va_outlet_5262007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>360VA outlet 5/26/2007</B></div> <div> <B>Where would one find an outlet the has the outlet that goes in each a different direction (shown in the drawing) or even the vertical outlets all facing left or right? </B></div> <div> <B>I am remodeling my home and would like to have the outlets facing the side (the plate to be installed vertical but the outlets facing to the side) so I can plug in a hairdryer and a coffee pot. Those large plugs do not plug in all at the same time, but I've seen them in a hotel like I'm trying to describe. </B></div> <div> <B>I appreciate your time and I also would appreciate your help. </B></div> <div> <B>Gina</B></div> <bR> <div> First of all, the 360 VA outlet you are talking about is a calculation for a quad-outlet. 180 VA X 2 duplex receptacles on one yoke. I'm sorry to inform you that you won't find receptacles made like that  goes in different directions unless you want to special order them. If you look at a stock item in any supply store, you will see that it would be unpractical to make a receptacle like that. There are cord and plug outlet that would meet your request at some major retail stores.</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <B> <A NAME="plugmold_in_kitchen_5212007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Plugmold in kitchen 5/21/2007</B></div> <div> <B>Hi Mr. Stubbs, </B></div> <div> <B>I would like to install a plug mold under my top kitchen cabinet in order to avoid interrupting the flow of my back splash tiles. I see from advice that you've given that the plug mold cannot be more than 20" from the countertop. Mine will be about 18" off of the countertop but it will extend from one side of the kitchen sink to the other side and beyond. Is that a code issue to have outlets above the kitchen sink? </B></div> <div> <B>Thank you so much! Best, Julie</B></div> <bR> <div> That will be just fine. It is to your advantage to install plugmold. The code requires that a receptacle shall be installed within 2 feet from the end of the countertop and no more than 4 foot apart. The plugmold gives you multiple choices and locations.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="transformer_in_attic_5162007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Transformer in attic 5/16/2007</B></div> <div> <B>I am creating a power fan ventilation system which utilizes a low voltage transformer (40 VA / 24 VAC) to run the thermostat and contactor relay. The unit will be inside a metal box and attached in the residential attic space. The local electrical inspector says the locating of a transformer in the attic is against the 2002 NEC. However, he cannot find the exact code number. </B></div> <bR> <div> Well, the first violation that you have is "I am creating a power fan ventilation system". All electrical equipment install shall be listed and labeled as an assembly. Plus, only wiring method in this code shall be allowed.</div> <bR> <div> <B>ARTICLE 110 Requirements for Electrical Installations</B></div> <div> <B>I. General</B></div> <div> <B>110.1 Scope.</B></div> <div> <I>This article covers general requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment, and tunnel installations.</I></div> <div> <B>110.2 Approval.</B></div> <div> <I>The conductors and equipment required or permitted by this Code shall be acceptable only if approved.</I></div> <div> <B>110.8 Wiring Methods.</B></div> <div> <I>Only wiring methods recognized as suitable are included in this Code. The recognized methods of wiring shall be permitted to be installed in any type of building or occupancy, except as otherwise provided in this Code.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="feed_mills_5132007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Feed mills 5/13/2007</B></div> <div> <B>What does the code state for grain being mixed and then being bagged in another area and then being stored in another area. I say it's Class 1 Division 2 but their is not much information to go on Feed Mills So, I would appreciate it if you could tell me how and where you find any information about Feed Mills Thank You David </B></div> <bR> <div> Grain falls under Class II, not Class I. Division I is the processing mode and Division 2 is the storage classification.</div> <bR> <div> <B>500.5 Classifications of Locations.</B></div> <div> <I><B>(A)</B></I><I> Classifications of Locations. Locations shall be classified depending on the properties of the flammable vapors, liquids, or gases, or combustible dusts or fibers that may be present, and the likelihood that a flammable or combustible concentration or quantity is present. Where pyrophoric materials are the only materials used or handled, these locations shall not be classified. Each room, section, or area shall be considered individually in determining its classification.</I></div> <bR> <div> <B>(C) Class II Locations.</B><I> Class II locations are those that are hazardous because of the presence of combustible dust. Class II locations shall include those specified in 500.5(C)(1) and (C)(2).</I></div> <div> <B>(1) Class II, Division 1. A Class II, Division 1 location is a location</B> <I>  </I></div> <div> <I>(1)     In which combustible dust is in the air under normal operating conditions in quantities sufficient to produce explosive or ignitible mixtures, or </I></div> <div> <I>(2)     Where mechanical failure or abnormal operation of machinery or equipment might cause such explosive or ignitible mixtures to be produced, and might also provide a source of ignition through simultaneous failure of electric equipment, through operation of protection devices, or from other causes, or </I></div> <div> <I>(3)     In which combustible dusts of an electrically conductive nature may be present in hazardous quantities.</I></div> <div> <I><B>FPN:</B></I><I>Combustible dusts that are electrically nonconductive include dusts produced in the handling and processing of grain and grain products, pulverized sugar and cocoa, dried egg and milk powders, pulverized spices, starch and pastes, potato and wood-flour, oil meal from beans and seed, dried hay, and other organic materials that may produce combustible dusts when processed or handled. Only Group E dusts are considered to be electrically conductive for classification purposes. Dusts containing magnesium or aluminum are particularly hazardous, and the use of extreme precaution is necessary to avoid ignition and explosion.</I></div> <bR> <div> <B>(2) Class II, Division 2. A Class II, Division 2 location is a location  </B> </div> <div> (1)     Where combustible dust is not normally in the air in quantities sufficient to produce explosive or ignitible mixtures, and dust accumulations are normally insufficient to interfere with the normal operation of electrical equipment or other apparatus, but combustible dust may be in suspension in the air as a result of infrequent malfunctioning of handling or processing equipment and </div> <div> (2)     Where combustible dust accumulations on, in, or in the vicinity of the electrical equipment may be sufficient to interfere with the safe dissipation of heat from electrical equipment or may be ignitible by abnormal operation or failure of electrical equipment.</div> <div> FPN No. 1:The quantity of combustible dust that may be present and the adequacy of dust removal systems are factors that merit consideration in determining the classification and may result in an unclassified area.</div> <div> FPN No. 2:Where products such as seed are handled in a manner that produces low quantities of dust, the amount of dust deposited may not warrant classification.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="article_680_42_c__5102007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Article 680.42(C) 5/10/2007</B></div> <div> <B>Hi Ed: </B></div> <div> <B>I have inspectors that are passing regular NMC to wire hot tubs located outdoor. The way I read this section a bare ground can be used for a single family dwelling, but the ground in the cable must be enclosed within the outer sheath of the wiring method. Any other type of wiring method requires an insulated ground. In my opinion if a bare ground is used it must be slotted from the current carrying conductors.. P.S. we have a number of these installation. Help! ASAP! </B></div> <div> <B>Thank You </B></div> <div> <B>Ray</B></div> <bR> <div> This wiring method can only be used on the interior of the single family dwelling. The only access to the equipment ground is at a junction box. Shock hazards are minimum and you may not be in a wet location. You have to convert to a raceway with the insulated equipment ground when leaving the interior. </div> <bR> <div> <B>680.21 Motors.</B></div> <div> <B>(A) Wiring Methods.</B></div> <div> <I><B>(4)</B></I><I> One-Family Dwellings. In the interior of one-family dwellings, or in the interior of accessory buildings associated with a one-family dwelling, any of the wiring methods recognized in Chapter 3 of this Code shall be permitted that comply with the provisions of this paragraph. Where run in a raceway, the equipment grounding conductor shall be insulated. Where run in a cable assembly, the equipment grounding conductor shall be permitted to be uninsulated, but it shall be enclosed within the outer sheath of the cable assembly.</I></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="200_to_225_amp_increase_on_delta"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>200 to 225 amp increase on delta 5/6/2007</B></div> <div> <B>Hello Ed,</B></div> <div> <B>I have recently purchased a new cnc lathe with a 30 horsepower motor. The amp usage is 180 so it calls for a 225 amp breaker. I currently have 200 amp service in Baltimore thru BGE, its 3 phase delta. </B></div> <div> <B>Can I make a determination of the ability of the lines to handle the 225 amp increase. What other considerations need to be taken into account other than a 225 amp main breaker? I'm told the wire from the meter to the cabinet is 2/0 and is capable of handling the extra 25 amps. It seems like a minimal increase in power and should be OK What do you think.</B></div> <div> <B>I have found nothing on the Internet when searching this topic. I hope you can give me some advice.</B></div> <div> <B>Thanks very much,</B></div> <div> <B>Kyle</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B> </B></FONT></div> <bR> <div> Will a gallon bucket fit into a 1/2 gallon can? That goes for a services also. You have several conditions to comply with. You will have to increase the service size and the main the main breaker to handle the increase in amps. You can't even install a 225 amp breaker in a 200 amp panelboard. You have added 180 amps to your existing loads, and most of all, your branch circuit breaker cannot be equal two or larger than the main overcurrent protection. Which one will trip first?</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="intent_of_the_code_522007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Intent of the code 5/2/2007</B></div> <div> <B>Ed, </B></div> <div> <B>I'd like to take one of your classes, preferably one on 2005 code changes. When is the next one? </B></div> <div> <B>An interesting question for you. The code allows an inspector to allow variations if he feels that the intent of the code is met. A hypothetical situation: Suppose a simple galley kitchen has four outlets, two on each side, and the electrician has given each side a 20 amp circuit. Obviously no problem. But suppose he instead put each outlet on its own 15 amp circuit. Would you accept that? </B></div> <div> <B>John</B></div> <bR> <div> Bare in mind that all inspectors are responsible for interpreting the code and complying with it. A lot of contractors and inspectors sometimes misconstrue the intent of the code. On this question you asked, it will not meet the intent of the code. Article 210.11 (C) requires a minimum of two 20 amp small appliance circuits. No inspector should allow this under any condition. He or she could not justify their ruling in a court of law.</div> <div> <B>210.11 Branch Circuits Required.</B></div> <div> <B>(C) Dwelling Units.</B></div> <div> <B>(1) Small-Appliance Branch Circuits.</B> In addition to the number of branch circuits required by other parts of this section, two or more 20-ampere small-appliance branch circuits shall be provided for all receptacle outlets specified by 210.52(B).</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  <A NAME="cabin_home_upgrade_4292007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <B>Cabin home upgrade 4/29/2007</B></div> <div> <B>hi I am planning on upgrading a service at a cabin home and I have a 60 amp fuse panel that I want to change to a 200 amp circuit breaker panel. the problem I am having is the meter is on a pole with a disconnect about 200 feet away from the house, do I also need a disconnect outside behind the panel which will be a main breaker panel on the opposite side of the wall or will the disconnect on the pole be sufficient enough along with the main breaker panel?</B></div> <bR> <div> You will need a 200 amp disconnect at the cabin. You have to meet the requirements of article 225.32 Location</div> <div> <B>225.32 Location.</B></div> <div> <I>The disconnecting means shall be installed either inside or outside of the building or structure served or where the conductors pass through the building or structure. The disconnecting means shall be at a readily accessible location nearest the point of entrance of the conductors. For the purposes of this section, the requirements in 230.6 shall be permitted to be utilized.</I></div> <bR> <div> Even though there is overcurrent protection at the pole, a single disconnect or no more than six movements of the hand is allowed. A quick disconnect is still necessary when you have an emergency condition.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="electrical_for_ac_replacement_4242007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Electrical for AC replacement 4/24/2007</B></div> <div> <B>I have an apartment building built in 1971 with 13 apartments in Florida. I recently replaced all the central ac units. The electrical inspector came to inspect and advised that I was required to put a GFI outlet every 25 feet from the AC equipment. For replacement of units is this necessary or is it for new construction only?</B></div> <div> <B>Thanks</B></div> <div> <B>Steve</B></div> <bR> <div> You've hear the term "if it ain't broke, don't fix it"? Well that also apply's to new installation. All codes are based on new installation. The A/C units are new, so the minimum electrical codes shall apply. If a new furnace is installed under an existing home, would you not install a light for servicing, and a GFCI receptacle? Let me also correct the wording on the receptacle requirements. A GFCI receptacle shall be installed within  25 ft of an A/C unit, not every 25 ft. The reason for the receptacles is for servicing the unit and the 25 ft will eliminate the need for longer or additional drop cords with a drop light cord. Drop lights cords come in a maximum of 25 ft lengths</div> <bR> <div> <B>210.63 Heating, Air-Conditioning, and Refrigeration Equipment Outlet.</B></div> <div> <I>A 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet shall be installed at an accessible location for the servicing of heating, air-conditioning, and refrigeration equipment. The receptacle shall be located on the same level and </I><I><B>within 7.5 m (25 ft)</B></I><I> of the heating, air-conditioning, and refrigeration equipment. The receptacle outlet shall not be connected to the load side of the equipment disconnecting means.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="7200_volt_primary_4242007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>7200 volt Primary 4/24/2007</B></div> <div> <B>Dear Sirs</B></div> <div> <B>What would the N.E.C..c. specifications be for buried primary power cables with respect to depth of burial, spacing of 3 conductors # 2 wire (7200 volts) ,composition -- layering and compaction of surrounding soils or required materials.</B></div> <div> <B>Thanks</B></div> <div> <B>Wayne</B></div> <bR> <div> <B>"You just gone make me open my code book"</B> I don't get many high voltage questions, but as I teach my students in class, you don't have to study it until you need it. If you are installing or questioning any equipment or wiring method over 600 volts nominal, just look in your NFPA 70 content and look for over 600 volts, nominal.</div> <div> Since you are questioning a wiring method, we will go to chapter 3 wiring method over 600 volts, nominal. The minimum depth shall comply with Article 300.50. The spacing of the conductors is the same for the size you asked about and any other size if they are direct burial, or in a single raceway. Spacing comes in affect when you parallel conductors. You just can't mix over 600 volts with under 600 volts.</div> <bR> <div> <B>310.60 Conductors Rated 2001 to 35,000 Volts.</B></div> <div> <B>(C) Tables.</B> <I>Ampacities for conductors rated 2001 to 35,000 volts shall be as specified in the Ampacity Table 310.67 through Table 310.86. Ampacities at ambient temperatures other than those shown in the tables shall be determined by the formula in 310.60(C)(4).</I></div> <div> <B>(2) </B><I>Burial Depth of Underground Circuits. Where the burial depth of direct burial or electrical duct bank circuits is modified from the values shown in a figure or table, ampacities shall be permitted to be modified as indicated in (a) and (b).   </I></div> <div> <I><B>(a)</B></I><I>     Where burial depths are increased in part(s) of an electrical duct run, no decrease in ampacity of the conductors is needed, provided the total length of parts of the duct run increased in depth is less than 25 percent of the total run length. </I></div> <div> <I><B>(b)</B></I><I>     Where burial depths are deeper than shown in a specific underground ampacity table or figure, an ampacity derating factor of 6 percent per 300-mm (1-ft) increase in depth for all values of rho shall be permitted.</I></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <I><IMG SRC="1a5df510.png" border=0 width="479" height="593" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="underground_service_conductor_4232007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Underground service conductor 4/23/2007</B></div> <div> <B>Dear Mr. Stubbs, </B></div> <div> <B>Great website, thank you very much. I am a homeowner doing a service upgrade (100A to 200A) to my home in Northern California. I am a professional engineer, have done a lot of electrical work, and have reviewed the 2002 NEC (still used in California) and plan to do the wiring myself. I am an engineer and feel comfortable. I do have a couple of questions for you. First, my local utility requires that for any new underground service or upgrade (100A - 225A), the service conductors be run in 3 inch conduit. In my case, the conductors will be 4/0. This conduit seems excessive, and is larger than the NEC requires (especially for 100A). The utility field service engineers don't know why or won't answer the question. You can't fight the power company, but out of curiosity, I was wondering if you had an idea as to why they would have such a requirement? </B></div> <div> <B>My second question involves arc fault breakers. Code requires them in bedroom outlets. Do you see any reason why one might not want to install them across the board? I know about the issue with hard-wired smoke detectors (I use battery detectors) and am thinking that the base unit for my wireless phone system (several extensions) might want to be on a non-arc breaker circuit. Are there any other considerations you can suggest? </B></div> <div> <B>Thank you, </B></div> <div> <B>Andrew</B></div> <bR> <div> Let's start with the first question. I'm not sure about your local power company. Our local power company deals with easy pulling. Our power companies minimum raceway size is 2 1/2 inches. This it not and NEC code requirement. The local power companies are exempt according to Article 90.2(B)(5). If you let the contractors size the raceways ahead of the meter, there is no telling what size they would install. The power company has to shoot a pull line in the raceway in order to install their cables, unless they just install burial cables.</div> <div> <B>90.2 Scope.</B></div> <div> <B>(B) Not Covered.</B> This Code does not cover the following: </div> <div> <B>(5) </B>    Installations under the exclusive control of an electric utility where such installations   </div> <div> <B>a. </B>    Consist of service drops or <B>service laterals</B>, and associated metering.</div> <bR> <div> On your second question, as of the 2005 NEC adoption, Arc-faults are required on the circuit serving the bedroom only. The 2008 NEC has introduced a change in additional requirements for Arc-faults. On your question, you are looking for convince for your wireless phone so that the arc-fault won't cause your power supply to turn off. The reason for the arc-fault is to protect the equipment in your home from arcing and causing a fire or injury to someone. Codes are designed for safety. By the way, if you do have an arc-fault in the future, I hope you have a hard wired phone in the home.  Everyone should have at least one. What if all the power goes out? As Carl Malden would say, "What will you do?". "What will you do?".</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="use_of_romax_4202007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Use of Romax 4/20/2007</B></div> <div> <B>Mr. Stubbs </B></div> <div> <B>I am looking at buying a house that has a 220v line for the dryer. It is </B></div> <div> <B>run with Romex (exact type unknown) and the outlet box is attached to </B></div> <div> <B>the poured concrete wall. It all looks dry and no fear of water </B></div> <div> <B>leaks  The Romex is run along the floor joists in the basement. Do I need </B></div> <div> <B>to remove the Romex and use a conduit system? Or run the Romex in </B></div> <div> <B>conduit? Or can it stay as is? What about the Romex in the basement for </B></div> <div> <B>the 120v outlets and lighting? The house is in Wisconsin. Thanks</B></div> <div> <B>Thanks John</B></div> <bR> <div> The existing wiring is not a problem if it is a 10/3, safe, not damaged, and installed by code. I can't see your condition, but if you're not sure about the wiring, you should call in a qualified electrician or an Electrical Inspector to take a look. The worse case   is the overcurrent device will open.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="retrofit_lighting_4182007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Retrofit lighting 4/18/2007</B></div> <div> <B>Ed,</B></div> <div> <B>We are adding a lighting contactor panel to control the lighting loads of an existing store.</B></div> <div> <B>Can we disconnect the wire from the breaker, wire nut it to another wire that goes to the contactor then back to the breaker?</B></div> <div> <B>I've been told that we cannot do that. The panel board cannot be used as a junction box which I believe is true for new work. But the other side of the room says that under repair and maintenance it is ok if it does not over fill the panel.</B></div> <div> <B>Can you give me some light on this?</B></div> <div> <B>Thanks</B></div> <div> <B>Dave </B></div> <bR> <div> Sorry Dave, I don't know who "WE" are. Are you the electrician or the owner/tenant? Who told you that you couldn't do it?</div> <div> The code does not address existing conditions in the panelboard enclosures. You can tap in the panelboard if you meet the conditions of Article 312.8</div> <bR> <div> <B>312.8 Enclosures for Switches or Overcurrent Devices.</B></div> <div> <I>Enclosures for switches or overcurrent devices shall not be used as junction boxes, auxiliary gutters, or raceways for conductors feeding through or tapping off to other switches or overcurrent devices, unless </I><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><I>adequate space for this purpose is provided</I></FONT><I>. The conductors shall not fill the wiring space at any cross section to more than</I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I> 40 percent </I></FONT><I>of the cross-sectional area of the space, and the conductors, splices, and taps shall not fill the wiring space at any cross section to more than </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>75 percent</I></FONT><I> of the cross-sectional area of that space.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="12_wire_homerun_4172007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>12 wire homerun 4/17/2007</B></div> <div> <B>This has always confused me. If I run a 20 amp/12 wire home run to bedroom outlets and have a overhead light (say in the walk-in closet) why would not a 14 wire be OK. The light itself hooks up 16 gauge or smaller and no electrician ever would mistake circuit for 20 amp. If bedroom outlets can be 15 amp on the 20 amp circuit why would it be dangerous to use 14 for switch and light? </B></div> <div> <B>Thanks, </B></div> <div> <B>Roy</B></div> <bR> <div> Let's not confuse manufactured equipment that can be removed or replace with wiring methods of the NEC. The branch circuit wiring from the overcurrent to the outlets shall be sized according to article 240.4(D). Nothing in the code said it would be dangerous, but it would be a violation. If the contractors were allowed to change up wiring methods at their discretion, tapping at a junction box would not be consistent or in compliance. Wiring methods are permanent. Do the installation the same. That is what the code is all about.</div> <bR> <div> <B>240.4 Protection of Conductors.</B></div> <div> <B>(D) Small Conductors.</B> <I>Unless specifically permitted in 240.4(E) through (G), the overcurrent protection shall not exceed 15 amperes for 14 AWG, 20 amperes for 12 AWG, and 30 amperes for 10 AWG copper; or 15 amperes for 12 AWG and 25 amperes for 10 AWG aluminum and copper-clad aluminum after any correction factors for ambient temperature and number of conductors have been applied.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="the_120240_v_specification_4112007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>The 120/240 v specification 4/11/2007</B></div> <div> <B>Sirs:</B></div> <div> <B>Recently I was reviewing a document that stated an electrical</B></div> <div> <B>specification for voltage as 120/240 single phase. My question is how</B></div> <div> <B>does this differ from straight 120 voltage or straight 240 voltage?</B></div> <div> <B>Thank you,</B></div> <div> <B>Tom</B></div> <bR> <div> Let me try to explain this in layman terms. The 120/240 means that there are two voltage supplied by a single phase transformer from the power company. You can use the 120 volt supply on one side of the panel to the neutral (phase A or Phase B), or you can use the 240 volt (phase A & B), supply for electric ranges, water heaters, furnaces, pool pumps, etc. Is this straight for you now?</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="retro_fit_federal_pacific_492007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Retro-fit Federal Pacific 4/9/2007</B></div> <div> <B>Dear Mr. Stubbs </B></div> <div> <B>My future retirement home built in 1973 in Florida has a 200A Federal Pacific main brkr. Panel it is fed from an underground outdoors meter pan with 4/0 se aluminum. The distance from the meter pan to the panel in the garage is 45' unfused.</B></div> <div> <B>To save labor I proposed to install a: 1) 200A main brk. Inside the garage back to back to the meter pan. </B></div> <div> <B>2) retrofit the existing panel box with a Cutler Hammer retrofit kit 200A load center.</B></div> <div> <B>3) rewire from new 200A main to new 200A load center retrofit in existing box with</B></div> <div> <B>4/0,4/0,4/0,2/0 al ser. </B></div> <div> <B>. </B></div> <div> <B>The new load center will have an insulated neutral, all neutral wires will be connected to the neutral bar individually.</B></div> <div> <B>The water service is non metallic, the existing ground is from the meter pan to a ground rod. </B></div> <div> <B>The existing bare conductors from 2-12 romex are twisted together in sets of 10 and attached to the ground bar under </B></div> <div> <B>one screw for each set. </B></div> <div> <B>My questions are </B></div> <div> <B>1) will I have to untwist & connect each bare ground wire to an individual screw. </B></div> <div> <B>2) will the ground 2/0 from the ground bar in the load center to the ground lug on the 200A main to the lug on the meter</B></div> <div> <B>to the ground rod be a continues wire. </B></div> <div> <B>3) will a second ground rod be required and where will it be connected to. </B></div> <div> <B>4) will arc fault protection be required for the bedrooms ( no rewiring will be done any place). </B></div> <div> <B>5) the retrofit ground bar has position for 15 individual wires, if additional ground bar is required can I be screwed to the</B></div> <div> <B>be box using same as ground or has to be wired to provided bar. </B></div> <div> <B>I will attempt to send You a picture of the existing Federal Pacific Stab-lock Electric Panel. </B></div> <div> <B>Thank You in advance. </B></div> <div> <B>Al   </B></div> <div> <B>PS The Engineering report made before I purchased this house in December of 2006 stated that the FPE Stab-Lok </B></div> <div> <B>should be replaced due to possible "Fire Hazard". I'm more concerned that there is no protection for the unfused </B></div> <div> <B>45' from the meter pan to the main panel located in the center of the house in the garage</B></div> <bR> <div> The safety of yourself and the home is more important trying to save a few dollars in cost. There is a lot more to loose if your equipment doesn't protect you. If you didn't know, Federal Pacific lost their UL listing over 20 years ago. There are manufactures that will sell the FPE Stab-lok, but will not give you a warranty.</div> <div> I think the simplest way is to purchase a meter-main combination and replace the meter enclosure outside. Install a 4/0 SER cable and separate the ground and neutral in the existing load center in the garage. Install an additional ground bar and separate all of the grounds and neutrals. The existing main can remain. You will have to relocate the grounding electrode system to the new main.</div> <bR> <div> Now for the answers 1-5:</div> <div> 1. Yes! You will have to untwist the grounds and neutrals. The NEC requires termination of grounded circuits to be permanent and continues. You don't                want to disconnect the neutrals in order to repair or remove a different circuit.</div> <div> 2. I'm not sure about the question. The 2/0 you are talking about should be the equipment ground and is part of the SER. The other conductor will be the grounding electrode conductor. That shall be continues from the main to the ground rod.</div> <div> 3. Yes, if you have more than 25 ohms to ground.</div> <div> 4. No! Arc-fault breakers are required for <B>new</B> bedroom branch circuits.</div> <div> 5. Yes! Be sure the bond screws are listed for the use.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  <A NAME="gfci_limits_3302007_1"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <B>GFCI limits 3/30/2007</B></div> <div> <B>I was told by a house inspector that a single GFCI at the beginning (line</B></div> <div> <B>side) of a circuit was sufficient protection for the entire circuit. Does</B></div> <div> <B>the NEC set a limit to the number of receptacles on a circuit that one</B></div> <div> <B>GFCI can protect?</B></div> <div> <B>Terry</B></div> <bR> <div> No! The Home Inspector is correct from the NEC. Ground Circuit Interrupter are designed to react to a ground fault to personal protection and not a load demand. The amount of receptacles on that circuit won't matter, just the ground fault. A GFCI breaker will services as a ground fault sensor and overcurrent protection.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="unused_knockouts_3252007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Unused knockouts 3/25/2007</B></div> <div> <B>I saw a few picks of junction boxes with unused knockouts. What are the dangers of this and what should someone do to fix it? Can covers over the knockouts be installed?</B></div> <div> <B>If I discovered Romex clamps or connectors were not used in a receptacle with a metal junction box what can be done to fix this without rewiring? Are there clamp on clamps for inside the box without tearing everything apart?</B></div> <div> <B>Tim</B></div> <bR> <div> First, all openings not used shall be closed. The purpose of junction boxes and enclosures with splices is to contain electrical sparks and prevent fires and shock hazards. If the holes are left in the j-box, you could have a potential spark which could lead to a fire.</div> <div> <B>110.12 Mechanical Execution of Work</B>.</div> <div> <I>Electrical equipment shall be installed in a neat and workmanlike manner. </I></div> <div> <B>(A) Unused Openings</B>.<I> Unused cable or raceway openings in boxes, raceways, auxiliary gutters, cabinets, cutout boxes, meter socket enclosures, equipment cases, or housings shall be effectively closed to afford protection substantially equivalent to the wall of the equipment. Where metallic plugs or plates are used with nonmetallic enclosures, they shall be recessed at least 6 mm (1/4 in.) from the outer surface of the enclosure.</I></div> <bR> <div> Solution: All knockout (KO) are standard sizes of 1/2, 3/4, 1 inch, etc. You can go to any electrical supply store, hardware or major building supply store and ask for the correct size KO. Most likely 1/2 inch will be your first choice.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="breaker_box_3122007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Breaker box 3/12/2007</B></div> <div> <B>Hello Ed, </B></div> <div> <B>I live in Illinois and, I am wanting to replace my old fuse box with a breaker box. Someone told me that when I call   to have my power shut off to hook the new breaker box up I have to have a electrical inspection. is this true? </B></div> <div> <B>thank you.</B></div> <bR> <div> As I have always stated in the previous questions asked, you have to check with your local jurisdiction on inspection requirements. I don't know of any local municipalities that don't require an inspection. Remember, the Authority Having Jurisdiction has a responsibility to protect you and your property from unsafe and hazards conditions. All electrical contractors are not who they say they are and some homeowners can burn a house down trying to rewire to save money or just sell it. Don't you want to know if it's wired correctly? Be sure, be sure and be sure. Get it inspected. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="size_conductor_in_bedrooms_3122007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Size conductor in bedrooms 3/12/2007</B></div> <div> <B>What size wire should be ran in residential homes for bed rooms?</B></div> <bR> <div> The minimum size conductor allowed in chapter 3 wiring method of the NEC is #14 awg copper or #12 awg aluminum in dwellings. There is minimum of 4 circuits that require that the conductors are #12 copper or #10 aluminum. Your two or more small appliance circuits, your bathroom GFCI receptacle(s) and your laundry circuit. All other general lighting circuits can be on a #14 awg with a 15 amp overcurrent device.</div> <div> Check with your local municipality for amendments to the NEC</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="receptacle_in_concrete_slab_312007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Receptacle in concrete slab 3/1/2007</B></div> <div> <B>A receptacle outlet installed in the concrete slab floor, of a patient care area, in a dental clinic shall be? :</B></div> <bR> <div> <B>A.) Located so as to minimize the likelihood of spilled liquids entering the receptacle. </B></div> <div> <B>B.) Installed with Sch. 80 RNC with and equipment grounding conductor.</B></div> <div> <B>C.) Installed with a metal raceway and an insulated grounding conductor. </B></div> <div> <B>D.) Ground-Fault Protected. </B></div> <bR> <div> <B>C.) Installed with a metal raceway and an insulated grounding conductor. </B></div> <div> Dental clinic fall under article 517.13(A) Wiring methods</div> <bR> <div> <B>517.13 Grounding of Receptacles and Fixed Electric Equipment in Patient Care Areas.</B></div> <div> Wiring in patient care areas shall comply with 517.13(A) and (B).</div> <div> <B>(A)Wiring Methods</B>. <I>All branch circuits serving patient care areas shall be provided with a ground path for fault current by installation in a metal raceway system, or a cable armor or sheath assembly. The metal raceway system, or cable armor, or sheath assembly, shall itself qualify as an equipment grounding return path in accordance with 250.118. Type AC, Type MC, Type MI cables shall have an outer metal armor or sheath that is identified as an acceptable grounding return path.</I></div> <div> <B>(B) Insulated Equipment Grounding Conductor.</B><I> In an area used for patient care, the grounding terminals of all receptacles and all non–current-carrying conductive surfaces of fixed electric equipment likely to become energized that are subject to personal contact, operating at over 100 volts, shall be grounded by an insulated copper conductor. The grounding conductor shall be sized in accordance with Table 250.122 and installed in metal raceways or metal-clad cables with the branch-circuit conductors supplying these receptacles or fixed equipment.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wiring__electric_meter__2272007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wiring (electric meter) 2/27/2007</B></div> <div> <B>I am pulling # 3 thhn wire for a 208 volt 3 phase 100 amp disconnect to a machine what size ground do I need</B></div> <div> <B>Thanks </B></div> <div> <B>Walter</B></div> <bR> <div> Since the largest the disconnect is rated at is 100 amps, the maximum size of the equipment grounding conductor from Table 250.122 is #8.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="island_with_no_appliance_2222007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Island with no appliance 2/22/2007</B></div> <div> <B>DEAR SIR, </B></div> <div> <B>THERE IS A SECOND ISLAND IN THE KITCHEN WITH A 12" OVER HANG COUNTER TOP ALL AROUND. IT'S A RECTANGULAR SHAPE WITH ONE OF THE LONG SIDES TAKEN AWAY FORMING A U- SHAPE. THE ISLAND SITS IN THE KITCHEN FACING TOWARDS THE LIVING ROOM WITH THE U- SHAPE IN THE KITCHEN. PULL OUT CABINETS ON COASTERS WILL BE PULLED OUT TOWARDS THE KITCHEN. I KNOW I NEED AT LEAST 1 RECEPTACLE BUT HOW HIGH? LOCATION? WILL IT HAVE TO MOUNTED ON THE KITCHEN SIDE OR THE LIVING ROOM SIDE?SINCE IT IS FACING TOWARDS THE LIVING ROOM WILL I NEED ONE FOR MY WALL SPACE? THE SIDE FACING THE LIVING ROOM IS ABOUT 5' LONG </B></div> <div> <B>THANK YOU, </B></div> <div> <B>PAT</B></div> <bR> <div> I am having great difficulty picturing your island countertop from the information you have given me. Even if I don't understand your description, I can tell you what the minimum requirements are. First your countertop is in violation of the overhang on the sides. You have more than 6 inches of overhang completely around the which violates Article 210.52(C)(5) The code requires at least one GFCI protected receptacle on the island that will serve the countertop.</div> <div> <B>210.52 Dwelling Unit Receptacle Outlets.</B></div> <div> <B>(C) Countertops.</B></div> <div> <B>(5) Receptacle Outlet Location.</B> Receptacle outlets shall be located above, but not more than 500 mm (20 in.) above, the countertop. Receptacle outlets rendered not readily accessible by appliances fastened in place, appliance garages, or appliances occupying dedicated space shall not be considered as these required outlets.</div> <div> <I>Exception: To comply with the conditions specified in (a) or (b), receptacle outlets shall be permitted to be mounted not more than 300 mm (</I><I><B>12 in.) below the countertop</B></I><I>. Receptacles mounted below a countertop in accordance with this exception shall not be located where the countertop extends more than 150 mm </I><I><B>(6 in.) beyond its support base.</B></I></div> <div> <B> </B></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="underground_wiring_2202007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Underground wiring 2/20/2007</B></div> <div> <B>We are considering running underground a wire from a shop which has its own meter down to a watering trough to keep it from freezing. The distance is somewhere around 1,000 ft. Is this possible and what type wire is needed. THANKS</B></div> <bR> <div> If it ain't broke, don't fix it. If there is metering service already at the watering trough, why do you need to send an underground conductor to it?</div> <div> The 1,000 ft. run can cost you a lot with a large conductor because of voltage drop and burial depth for protection. I can not give you a conductor size or ampacity rating because you didn't tell me the voltage or the amp rating of the equipment. There is a formula for calculating the voltage drop and the conductor size. Get back to me with the information.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="undergound_service_upgrade_2202007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Underground service upgrade 2/20/2007</B></div> <div> <B>Hi Ed, </B></div> <div> <B>I don't live in your state but have a quick standard question. </B></div> <div> <B>Where I live we have underground service cables. My neighborhood was built back in early 70's and all houses have 100 amp service's. </B></div> <div> <B>Having an electrical background common since tell me that the 4 awg underground cable is only good for 100 amps. </B></div> <div> <B>My neighbor however who does handyman work on the side and works for the railroad (electric), tells me I could upgrade my existing service to a 200 amp with no problem because the underground cable is able to handle it. Thinking it is cool enough. Because he did it on his house. </B></div> <div> <B>I argued the thought saying its not the same as an overhead (air-cooled) drop. </B></div> <div> <B>I understand the reason people would do it that way because of not wanting all that dig up work to where ever the underground pod may be. </B></div> <div> <B>But understanding electrical services my common since tells me its wrong. </B></div> <div> <B>Would like to hear your technical output on this one. </B></div> <div> <B>Thank You </B></div> <div> <B>Frank</B></div> <bR> <div> You are correct and the handyman is part correct. Please stay away from the handyman. If an underground cable is installed by you or an electrical contractor, then you shall comply with the articles of the NEC or the local municipality. Remember, the service size is based on the demand calculations of Article 220 of the NEC.</div> <div> The local power companies base their wire size by the average meter demands in their jurisdiction. When underground conductors are installed by the local power companies, they may not increase the conductor size unless they are sure there will be a demand increase in amp usage. Changing the service size doesn't mean an increase in demand.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="grounding_sub_panel_2172007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Grounding sub panel 2/17/2007</B></div> <div> <B>my brother-in-law installed a sub-panel in a detached building about 80 feet</B></div> <div> <B>from his home. He installed a 60 amp sub-panel fed from a main panel in the</B></div> <div> <B>house. He ran three conductors from the house (2 hot's and 1 neutral) to the</B></div> <div> <B>sub-panel and drove a ground rod at the building and grounded the sub-panel.</B></div> <div> <B>Is this allowed by code?</B></div> <bR> <bR> <div> Yes, as long as you comply with Article 250 32, separate buildings or structure. If you have a common metal water line in both structures, you have to comply with 250.32(B)(1) and install an equipment ground with your phase and neutral conductors.</div> <bR> <div> <B>250.32 Two or More Buildings or Structures Supplied from a Common Service.</B></div> <div> <B>(B) Grounded Systems</B>. <I>For a grounded system at the separate building or structure, the connection to the grounding electrode and grounding or bonding of equipment, structures, or frames required to be grounded or bonded shall comply with either 250.32(B)(1) or (2).</I></div> <div> <B>(2) Grounded Conductor.</B><I> Where (1) an equipment grounding conductor is not run with the supply to the building or structure, (2) there are no continuous metallic paths bonded to the grounding system in both buildings or structures involved, and (3) ground-fault protection of equipment has not been installed on the common ac service, the grounded circuit conductor run with the supply to the building or structure shall be connected to the building or structure disconnecting means and to the grounding electrode(s) and shall be used for grounding or bonding of equipment, structures, or frames required to be grounded or bonded. The size of the grounded conductor shall not be smaller than the larger of   </I></div> <div> <I>(1)     That required by 220.22 </I></div> <div> <I>(2)     That required by 250.122</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="pool_heaters_2162007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Pool heaters 2/16/2007</B></div> <div> <B>Does the circuit for a pool heater in a single family home need to be in conduit? </B></div> <div> <B>In the 2005 code. </B></div> <div> <B>Also does the circuit for the sub-panel to the pool pumps ( single family) need to be in conduit? </B></div> <div> <B>In the 2005 code.</B></div> <bR> <div> Yes. Article 680 swimming pools. </div> <div> <B>680.25 Feeders.</B></div> <div> <I>These provisions shall apply to any feeder on the supply side of panelboards </I><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><I><B>supplying branch circuits for pool equipment</B></I></FONT><I> covered in Part II of this article and on the load side of the service equipment or the source of a separately derived system. </I></div> <div> <B>(A) Wiring Methods</B><I>. Feeders shall be installed in rigid metal conduit, intermediate metal conduit, liquidtight flexible nonmetallic conduit, or rigid nonmetallic conduit. Electrical metallic tubing shall be permitted where installed on or within a building, and electrical nonmetallic tubing shall be permitted where installed within a building</I>.</div> <div> <B>680.21 Motors</B>.</div> <div> <B>(A) Wiring Methods.</B></div> <div> <B>(1) General.</B> <I>The branch circuits for pool-associated motors shall be installed in rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit, or Type MC cable listed for the location. Other wiring methods and materials shall be permitted in specific locations or applications as covered in this section. Any wiring method employed shall contain a copper equipment grounding conductor sized in accordance with  250.122 but not smaller than 12 AWG.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="nm_b_in_hotel_construction_292007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>NM-B in hotel construction 2/9/2007</B></div> <div> <B>Hello Sir,</B></div> <div> <B>First of all, let me thank your for your generous knowledge that you are sharing with general public in the best way one can understand.</B></div> <div> <B>I looked at your site few hours ago and about to fall asleep reading through your quick talks but still want to go on reading it. Just amazing.</B></div> <div> <B>I have question about my Small Hotel construction project in East Texas state. It is an Exterior access 30 room motel that I will be doing as owner builder. I would like to know what will be the requirement for use of wiring. I want to use NM-B. But would like to be sure about what code the state as following as of date and could not clearly find it online. So can I use the NM-B and what code standard the state</B></div> <div> <B>of Texas is following ?</B></div> <div> <B>Thanks</B></div> <bR> <div> <B>Sunny</B></div> <bR> <div> Thank you for your warm comment on my web-site.</div> <div> I did a Internet search to find out if Texas has adopted the 2005 NEC (NFPA-70) and I couldn't find a thing. You need to check with your local municipality or inspection department to see what electrical code they are enforcing. Click here: <A HREF="http://www.sos.state.tx.us/" TARGET="_top" TITLE="http://www.sos.state.tx.us/"><U>http://www.sos.state.tx.us/</U></A></div> <bR> <div> If they have adopted the 2005 NEC, then NM-B can be installed if you comply with Article 334.10(3)</div> <bR> <div> <B>ARTICLE 334 Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS</B></div> <div> <B>334.10 Uses Permitted.</B></div> <div> Type NM, Type NMC, and Type NMS cables shall be permitted to be used in the following:  </div> <div> (1)     One- and two-family dwellings. </div> <div> (2)     Multifamily dwellings permitted to be of Types III, IV, and V construction except as prohibited in 334.12. </div> <div> (3)     <B>Other structures</B> permitted to be of Types III, IV, and V construction except as prohibited in 334.12. Cables shall be concealed within walls, floors, or ceilings that provide a thermal barrier of material that has at least a 15-minute finish rating as identified in listings of fire-rated assemblies. </div> <div> <B>334.12 Uses Not Permitted.</B></div> <div> (A) Types NM, NMC, and NMS. Types NM, NMC, and NMS cables shall not be used as follows:   </div> <div> (1)     As open runs in dropped or suspended ceilings in other than one- and two-family and multifamily dwellings.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="lighting_fixture_installation_222007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Lighting fixture installation 2/2/2007</B></div> <div> <B>how ? you determine the proper mounting of a light fixture</B></div> <bR> <div> What do you mean by proper mounting. Most fixtures come with installation instructions or are you talking about support?</div> <div> <B>410.16 Means of Support.</B></div> <div> <B>(A) Outlet Boxes.</B> Outlet boxes or fittings installed as required by 314.23 shall be permitted to support luminaires (fixtures)</div> <div> <B>(B) Inspection.</B> Luminaires (fixtures) shall be installed so that the connections between the luminaire (fixture) conductors and the circuit conductors can be inspected without requiring the disconnection of any part of the wiring unless the luminaires (fixtures) are connected by attachment plugs and receptacles.</div> <div> <B>(C) Suspended Ceilings.</B> Framing members of suspended ceiling systems used to support luminaires (fixtures) shall be securely fastened to each other and shall be securely attached to the building structure at appropriate intervals. Luminaires (fixtures) shall be securely fastened to the ceiling framing member by mechanical means such as bolts, screws, or rivets. Listed clips identified for use with the type of ceiling framing member(s) and luminaire(s) [fixture(s)] shall also be permitted. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <B> <A NAME="center_load_power_1242007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Center load power 1/24/2007</B></div> <div> <B>We have a house that was one family, I believe 125 amps, but first added one room then another. </B></div> <div> <B>It is set up much like a duplex. </B></div> <div> <B>So the person who set this up put a 50 amp breaker on the first breaker box, then from that jumped to a GE center load breaker box, and all the electric to that new construction is there. Assuming that was even right in the first place...big assumption, what would cause loss of power in one two outlets, on one 20 amp breaker, and all the ground wires in the ground bar, to burn and corrode? </B></div> <div> <B>How can I a poor woman, fix it? </B></div> <div> <B>Thanks, </B></div> <div> <B>Carla</B></div> <bR> <div> That is a question that can only be answered by being on site. There are so many conditions that could cause your circuit to burn up. You have a serious grounding problem or a possible phase on the ground bar. Overcurrent devices are there to protect you and the equipment from hazards. Keep in mind, if the protection device is not protecting you then you need an electrical contractor to get there and correct the problem. Make it safe. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="smoke_detectors_1102007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Smoke detectors 1/10/2007</B></div> <div> <B>Ed,</B></div> <div> <B>Am I to understand that as of January 1, this year, all </B><B><U>rewired</U></B><B> houses shall require a smoke detector in each bedroom too rather than 10 feet (maximum) from them?</B></div> <bR> <div> No, read it again. All new homes and any home where the bedrooms are gutted.</div> <bR> <div> <B><U>Smoke alarms </U></B><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B><U>4/27/2006</U></B></FONT></div> <div> <B>Ed,</B></div> <div> <B>I am unclear on the rules for wiring in a smoke alarm circuit for a house. I have heard everything from all smoke alarms should be interlocked together and that they need their own circuit to just adding the alarm to the bedroom receptacle circuit is sufficient. Does the state of GA have it's own requirement? Is there special codes for new construction? Also, where do the alarms have to be placed in a home?</B></div> <div> <B>Thanks,</B></div> <div> <B>Tim</B></div> <div> Let's see if I can clear this question up. All newly installed smoke detectors shall be interlocked together and shall have a battery backup. They can be on any circuit in the home except the bathroom, kitchen or laundry circuit which shall have no other outlets. Currently the State of Georgia has an amendment only requiring smoke detectors within 10 feet of any bedroom and a minimum of one on each level. On January 1, 2007, the State will amend the current ruling a revert back to a smoke detector in every bedroom and a minimum of one on each floor that shall be interconnected with a battery backup</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="utility_service_conductors_1102007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Utility service conductors 1/10/2007</B></div> <div> <B>Seems like I asked you this question 15 years ago (Why does the utility get away with smaller conductors than I'm required to use?) Isn't this answer you gave in reverse?</B></div> <bR> <div> Yes, thank you Perry.</div> <bR> <div> <B><U>NEC ampacity table </U></B><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B><U>6/26/2006</U></B></FONT></div> <div> <B>Mr. Stubbs,</B></div> <div> <B>I found your website online when querying an NEC question. I would like to get your opinion on some of the ampacity sections of the NEC. </B></div> <div> <B>As you are well aware there are ampacity charts based upon conductors in free air vs conductors in conduit. </B></div> <div> <B>Please consider the following scenario:</B></div> <div> <B>A panel shop builds a control panel with numerous components and multiple wire sizes represented. Also, this control panel has a large starter and the motor requires 2/0 AWG conductors to satisfy its current requirements. </B></div> <div> <B>What about the power wiring from the MCP (or Circuit Breaker), which is also in the control panel, to the Motor Starter? Should these conductor ampacities be based upon the conduit ratings or the free air ratings or somewhere in between? My question stems from the fact that these conductors aren't in free air but also aren't crowded together in a conduit. </B></div> <div> <B>Thanks in advance for looking at this question.</B></div> <div> <B>Ralph</B></div> <div> I will make this a simple answers. The only time you rate conductors for free air is when the actual conductors are <B>IN THE FREE AIR. </B>The reason why the conductors can be reduced in the free air because the conductors will dissipate all heat on the conductors no matter how high the ambient temperature. The conductors everywhere else shall be rated by the correct tables allowed in Article 310. Those conductors can not dissipate heat if they are enclosed in a raceway or cabinet. Have you ever noticed that the overhead conductor size from <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>the power company is larger</B></FONT> than the conductors coming out of your riser raceways? Got it?</div> <bR> <div> I meant to say <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>the power company conductor</B></FONT> <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>is smaller</B></FONT>. Thanks for the correction. I'm surprised no one else caught it</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="15___20_amp_branch_circuits_162007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>15 & 20 amp branch circuits 1/6/2007</B></div> <div> <B>Dear Mr. Stubbs, </B></div> <div> <B>How 120 volt 15 amp receptacles are allowed on a 15 amp branch circuit, and how many are allowed on a 20 amp branch circuit. I have searched the 2005 code and could not find the answer. </B></div> <div> <B>Thank you, </B></div> <div> <B>Leo </B></div> <bR> <div> That depends if the receptacles are for commercial or dwellings. Since general use receptacles in dwellings are installed for conveyance, there is no limit on the amount that you can have on a 15 or 20 amp circuit. On commercial general use, each receptacle device on one yoke is calculated at 180 VA. Since you can only use 80% of the overcurrent device, you will be limited to the number of devices on that circuit.</div> <bR> <div> <B>220.14 Other Loads --All Occupancies</B></div> <div> <I> All Occupancies. In all occupancies, the minimum load for each outlet for general-use receptacles and outlets not used for general illumination shall not be less than that computed in 220.14(A) through (L), the loads shown being based on nominal branch-circuit voltages.</I></div> <div> <B>(I) Receptacle Outlets.</B> <I>Except as covered in 220.14(J)and(K), receptacle outlets shall be computed at not less than 180 volt-amperes for each single or for each multiple receptacle on one yoke. A single piece of equipment consisting of a multiple receptacle comprised of four or more receptacles shall be computed at not less than 90 volt-amperes per receptacle.</I></div> <bR> <bR> <div>  <IMG SRC="1a48fc10.png" border=0 width="399" height="193" ALIGN="BOTTOM" HSPACE="0" VSPACE="0">     <IMG SRC="14990e50.png" border=0 width="400" height="229" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="xtr_room_design_question_142007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>XTR room design question 1/4/2007</B></div> <div> <B>Hello Mr. Stubbs</B></div> <div> <B>I would like your opinion on a utility transformer room design.</B></div> <div> <B>Design: We have (5) 20KV oil filled transformers inside a building parking deck within a dedicated room open to parking deck driveway. We plan to use the entire opening for ventilation by natural circulation via chain fencing.</B></div> <div> <B>I would appreciate your comments on this design ref. pdf attached.</B></div> <div> <B>Eric</B></div> <bR> <div> Eric, you need to call me in the office on this question. I think I know what project you are talking about and it involves safety issues and the power company. You know my number.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="sub_panel_in_attic_garage_112007"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Sub-panel in attic garage 1/1/2007</B></div> <div> <B>I want to add a 100A subpanel in my attached garage and have the following questions/concerns:</B></div> <div> <B>1)</B><FONT SIZE="1" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT><B>The simplest place to put the subpanel will be in the common wall between the house/garage. Is this allowed?</B></div> <div> <B>2)</B><FONT SIZE="1" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT><B>The simplest place to put the subpanel is also near an exterior door. Can the “swing” of the door infringe on the 30”x36” clear area required in front of the panel?</B></div> <div> <B>3)</B><FONT SIZE="1" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT><B>Do I need a ground rod for the subpanel?</B></div> <div> <B>Thanks in advance! – This is a great site!</B></div> <bR> <div> If your garage is attached, then that is the same installation as a panelboard in another section of the house. Just feed your 4 conductor cable to the garage and install your branch circuits. No ground rod required. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="ground_wireac_connection_12292006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Ground wire/AC connection 12/29/2006</B></div> <div> <B>Mr. Stubbs,</B></div> <div> <B>1) I am checking/redesigning certain commercial installation and I came across the ground wire sizes between the panelboards and the MDP. Out of 38 spots in the MDP, 32 have less than necessary wire gauge for the ground wire sizes. For instance, in a 225A panelboard using 3/0 wire, the ground wire size chosen was #6, when NEC 2005 250.66 says #4. Why is that?</B></div> <div> <B>2) Is correct that A/C units don't need to be connected to a panelboard, but each unit connected straight to the respective breaker in the MDP?</B></div> <div> <B>Thanks in advance,</B></div> <div> <B>J.R.</B></div> <bR> <div> Your looking at the wrong article. Article 250.66 covers the grounding electrode conductor ahead of the main. Article 250122 is the equipment ground after the main. It is called the equipment ground because after you pass the first main, you are protecting equipment. Table 250.122 shows that a 200 amp breaker requires a #6 equipment ground. <U>A 225 amp breaker requires a #4</U> up to the 300 amp breaker (overcurrent protection).</div> <bR> <div> Article 250.66 is based on the size of the phase conductor at the service only (ahead of the main). If your service conductors are 2/0 or 3/0 copper, then the grounded conductor and the electrode conductor shall be #4 copper. <B>#6 is incorrect.</B></div> <div> Question # 2 is correct. You can go directly to the main if is has branch circuit terminals in it. If the AC units are outside next to the main service, wouldn't it be cheaper and less labor cost to run the branch circuits straight to each other?</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="feed_meter_100_200amp_12252006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Feed meter 100& 200amp 12/25/2006</B></div> <div> <B>I have 3 gage meter base ,200 amp. What size wire gage do I need ? to feed meter & 100& 200 amp shutoff switches? </B></div> <div> <B>Reta</B></div> <bR> <div> Reta, your question is too general. Are you installing a 100 amp service or a 200 amp service? I'm not sure what you mean by a 3 gage meter base.</div> <div> My suggestion to you is to get with an electrical contractor and have him / her look at what you want to install and maybe they can help you. I can't answer a question that is too general. Sorry!</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="service_meter_wiring_12192006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Service meter wiring 12/19/2006</B></div> <div> <B>I am wiring new housing and I was told by the inspector that I had to bring my SER through the attic, in the garage attic area, and convert to IMC and go down through the top of the meter. Where it comes out through the wall of the garage it goes through a 2'' LB. I suggested that I bring the SER through the interior wall of the garage and come in the back of the meter can passing through a 21/2" close nipple. The wall of the garage is constructed of 2x4 studs. I follow one stud away from my exit hole to sweep the wire to go into the backside of the meter to avoid over bending it. The inspector is stating that I am in code violation by over bending the SER. My point to him is when it passes through the 2" LB it creates more of a bend in the SER than when it comes in the back of the meter. The size of the SER is 3- 2/0's with a bare #2 ground, all copper conductors. The CQ staff on this housing project don't have a problem with it coming in the back but need specific code info to back up this installation. They have other projects going on in other areas that they say is the only way other electricians are installing the service wire and have had no conflict. Please advice me  on a code section (2002) to help me resolve this so as I can proceed with the installation as soon as possible. Thank you for your time. Respectfully</B></div> <div> <B>Randy</B></div> <bR> <div> Seems like you will have the problem resolved by the time you get my answer.</div> <div> First, let me <B>remind everyone</B> that you may have local ordinances to comply with. Second, you asked about the 2002 code section which means you are out of the State of Georgia or you are one of the 13 cities or counties in Georgia with amendments.</div> <div> Unless you are under a local ordinance, I don't know why the inspector is requiring IMC or a close nipple. SER can be run outside, along the wall, along the ceiling, etc; and shall not be subject to physical damage. SER requires a connector upon entering an enclosure (refers you to Article 334.30). You are correct that the close nipple will create a sharper bend in the SER radius. Please read Article 338 (2002 NEC)</div> <bR> <div> <B>338.24 Bending Radius</B>.</div> <div> <I>Bends in Types USE and SE cable shall be made so that the cable will not be damaged. The radius of the curve of the inner edge of any bend, during or after installation, shall not be less than five times the diameter of the cable.</I></div> <bR> <div> <B>334.30 Securing and Supporting</B>.</div> <div> <I>Nonmetallic-sheathed cable shall be secured by staples, cable ties, straps, hangers, or similar fittings designed and installed so as not to damage the cable at intervals not exceeding 1.4 m (41/2 ft) and within 300 mm (12 in.) of every cabinet, box, or fitting. Flat cables shall not be stapled on edge.</I></div> <bR> <div> Without a local ordinance, I think the inspector is making it hard on himself. Good luck.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="nmb_wireamp_load_12102006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>NMB wire amp load 12/10/2006</B></div> <div> <B>Hi,</B></div> <div> <B>Can you give me some info on NM-B max amp loads? My a/c guy installed a heat pump with a # 6 GA NM_B wire. At the panel a 60 amp CB and on the air handler is a 60 amp CB I looked on the www and got some info that max 55 amp on # 6 GA NM_B copper wire. Is the # 6 GA wire ok on a 60 amp CB ?</B></div> <div> <B>Thank you,</B></div> <div> <B>Powhatan </B></div> <bR> <div> I'm glad you asked this question. Let me clear up a few misconceptions on conductor size and NM-B. All new NM shall have a 90 degree rated insulation. That's where the (B) came from. The old NM conductor was a problem in the attics and other high ambient temperature areas that caused the insulation to break down and cause shorts and electrical fires. Even though the conductor has a 90 degree rating, you can only use the 60 degree column. NM-B maybe an easy wiring method, but not the best for ampacity rating. (see Article 334.80 below)</div> <div> If you use a different wiring method, like THWN, THHN, THW, etc; in a raceway, you can use smaller conductors. Take a look at Article 110.14(C)(1)</div> <bR> <div> <B>110.14 Electrical Connections.</B></div> <div> <B>(C) Temperature Limitations</B>. <I>The temperature rating associated with the ampacity of a conductor shall be selected and coordinated so as not to exceed the lowest temperature rating of any connected termination, conductor, or device. Conductors with temperature ratings higher than specified for terminations shall be permitted to be used for ampacity adjustment, correction, or both.</I></div> <div> <I>(1) Equipment Provisions. The determination of termination provisions of equipment shall be based on 110.14(C)(1)(a) or (C)(1)(b). Unless the equipment is listed and marked otherwise, conductor ampacities used in determining equipment termination provisions shall be based on Table 310.16 as appropriately modified by 310.15(B)(1) through (6).   </I></div> <div> <I>(a)     Termination provisions of equipment for circuits rated 100 amperes or less, or marked for 14 AWG through 1 AWG conductors, shall be used only for one of the following:  </I></div> <div> <B>(1)     Conductors rated 60°C (140°F)</B> </div> <div> <I>(2)     Conductors with higher temperature ratings, provided the ampacity of such conductors is determined based on the 60°C (140°F) ampacity of the conductor size used </I></div> <div> <I>(3)     Conductors with higher temperature ratings if the equipment is listed and identified for use with such conductors </I></div> <div> <I>(4)     For motors marked with design letters B, C, D, or E, conductors having an insulation rating of 75°C (167°F) or higher shall be permitted to be used provided the ampacity of such conductors does not exceed the 75°C (167°F) ampacity. </I></div> <div> <I>(b)     Termination provisions of equipment for circuits rated over 100 amperes, or marked for conductors larger than 1 AWG, shall be used only for one of the following:   </I></div> <div> <B>(1)     Conductors rated 75°C (167°F)</B> </div> <div> <I>(2)     Conductors with higher temperature ratings, provided the ampacity of such conductors does not exceed the 75°C (167°F) ampacity of the conductor size used, or up to their ampacity if the equipment is listed and identified for use with such conductors.</I></div> <bR> <div> According to Table 310.16, the conductor has to be a #6 NM or  a single conductor in the 75 degree column. I don't know what the load is on the heat pump, but the conductor and the overcurrent device shall not be less than 125% of the full load.</div> <bR> <div> <B>334.80 Ampacity.</B></div> <div> <I>The ampacity of Types NM, NMC, and NMS cable shall be determined in accordance with 310.15. The ampacity shall be in accordance with the 60°C (140°F) conductor temperature rating. The 90°C (194°F) rating shall be permitted to be used for ampacity derating purposes, provided the final derated ampacity does not exceed that for a 60°C (140°F) rated conductor. The ampacity of Types NM, NMC, and NMS cable installed in cable tray shall be determined in accordance with 392.11.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="gfci_stickers_1272006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>GFCI stickers 12/7/2006</B></div> <div> <B>Ed,</B></div> <div> <B>I had this problem once and went online and e-mailed Leviton about it. Within 3 days they sent me a mess of ‘them.</B></div> <div> <B>Where is one of these </B><B><U>ALL</U></B><B> problem solving stores you mention in the last sentence of your answer? Do they have orange letters in their logo?</B></div> <div> <A HREF="id45_ungrounded_gfci_5192004.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U><B>See Ungrounded GFCI 5/19/2004</B></U></A> </div> <bR> <div> I never named a store or a manufacture in my answer. I have no sponsor so I don't say any. You can though.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="20_amp_receptacle_1232006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>20 amp receptacle 12/3/2006</B></div> <div> <B>Hello, I know you cannot put a 20 amp receptacle 12-gauge on a 15-amp circuit. But can you put a 15 amp receptacle 14-gauge on a 20-amp circuit??? </B></div> <div> <B>Thank You</B></div> <bR> <div> You've got it backwards. The overcurrent device can be smaller than the conductor as long as the demand is not larger than the conductor or the overcurrent device. Device protection shall comply with Article 210.20 and 210.21.</div> <div> <B>240.4 Protection of Conductors.</B></div> <div> <I>Conductors, other than flexible cords, flexible cables, and fixture wires, shall be protected against overcurrent in accordance with their ampacities specified in 310.15, unless otherwise permitted or required in 240.4(A) through (G).</I></div> <div> <B>(D) Small Conductors.</B><I> Unless specifically permitted in 240.4(E) through (G), </I><I><B>the overcurrent protection shall not exceed 15 amperes for 14 AWG</B></I><I>, 20 amperes for 12 AWG, and 30 amperes for 10 AWG copper; or 15 amperes for 12 AWG and 25 amperes for 10 AWG aluminum and copper-clad aluminum after any correction factors for ambient temperature and number of conductors have been applied.</I></div> <div>  <B>210.20 Overcurrent Protection.</B></div> <div> <I>Branch-circuit conductors and equipment shall be protected by overcurrent protective devices that have a rating or setting that complies with 210.20(A) through (D).</I></div> <div> <B>(D) Outlet Devices.</B><I> The rating or setting shall not exceed that specified in 210.21 for outlet devices.</I></div> <div> <I>210.21 Outlet Devices.</I></div> <div> <B>(B) Receptacles.</B></div> <div> <I>(1) Single Receptacle on an Individual Branch Circuit. A single receptacle installed on an individual branch circuit shall have an ampere rating not less than that of the branch circuit</I><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><I>. </I></FONT></div> <div> <B>(3) Receptacle Ratings.</B><I> Where connected to a branch circuit supplying two or more receptacles or outlets, receptacle ratings shall conform to the values listed in Table 210.21(B)(3), or where larger than 50 amperes, the receptacle rating shall not be less than the branch-circuit rating.</I></div> <bR> <div> Study a little more and you'll get it.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="aic_rating_question_11302006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>AIC rating question 11/30/2006</B></div> <div> <B>Ed,</B></div> <div> <B>I'll be doing a 400amp service upgrade in my home (in Canton,GA), with the new outside panel meter / main combo (meter socket and 2 200amp 22KAIC breaker mains) being installed by and electrician. The house has an existing 200 amp main lug 40 breaker panel (Cutler-Hammer BR4040L200) and I'll be adding another 200 amp panel main lug 40 breaker panel (same make/model as existing) on the other side of the basement. My question is this, the existing 200 amp meter/main combo which feeds the existing panel (It a Cutler unit but I don't have the model number) has a main breaker rated at 10 KAIC, and all of the branch breakers are equally AIC rated. When the new meter/main combo goes in that is a Midwest RS45508C which has 2 GE THQD22200WL main breakers in it, both rated at 22 KAIC, so I'm assuming I'll probably need to swap all my existing Cutler BR breakers rated at 10KAIC, for Cutler BRH breakers rated at 22KAIC (which the panels except and are rated for). Is this a correct assumption or is there some nuance of the code I'm missing that would permit leaving this as is. I just want to make sure scraping a few hundred bucks in breakers is my only option. </B></div> <div> <B>Thank again for your help.</B></div> <div> <B>Mike</B></div> <bR> <div> This many not be a big fault problem as you may think. The 22 KAIC breaker will protect your equipment better then the 10 KAIC breaker if the fault current will be that high by the time it reaches your service. Check with your local Power Company and find out what the available fault current on their transformer may be and what size conductors did they supply to your home. On overhead drops to a single family community, the fault current is usually under 10,000 AIC. Underground may be higher because of the location, non-aircooled and impedance of the transformer. One call, that's all</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="grounding_100amp_subpanel_11232006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Grounding 100amp subpanel 11/23/2006</B></div> <div> <B>If I install a 100 amp subpanel for a shop. The sub-panel will be fed from a 200 amp main panel. Will I need to pull a equipment ground along with the feeder conductors, from the main panel to the sub-panel and do not bond the neutral and ground bars together in the sub-panel?</B></div> <bR> <div> You will need an equipment ground to the sub-panel. If you have a metal raceway with the approved fittings, you won't have to pull an equipment grounding conductor. An equipment grounding conductor shall be required if the raceway is non-metallic, like PVC. The equipment ground shall be sized by Table 250.122.</div> <div> You are correct by not bonding the neutral and ground bars together. Bonding the bars together defeats the requirements of pulling a separate ground and neutral just to connect them together again on the other end. We are not paralleling the conductors.</div> <bR> <div> <B>250.96 Bonding Other Enclosures.</B></div> <div> <B>(A) General.</B> <I>Metal raceways, cable trays, cable armor, cable sheath, enclosures, frames, fittings, and other metal non–current-carrying parts that are to serve as grounding conductors, with or without the use of supplementary equipment grounding conductors, shall be effectively bonded where necessary to ensure electrical continuity and the capacity to conduct safely any fault current likely to be imposed on them. Any nonconductive paint, enamel, or similar coating shall be removed at threads, contact points, and contact surfaces or be connected by means of fittings designed so as to make such removal unnecessary.</I></div> <bR> <div> <IMG SRC="1458f780.png" border=0 width="399" height="376" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> An equipment ground or metal raceway is required at the sub-panel in the same building or separate building (see Article 250-23)</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="large_closet_11212006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Large closet 11/21/2006</B></div> <div> <B>I have a residential house and they have a 14'6" x 11'2" do I have to put outlets in the closet. If so how many. I have a 14'6" wall, 11'2" wall, 3'9" wall, And a 27" wall what do I do.</B></div> <bR> <div> None! Outlets are not required in closets. Closets are not considered habitable space and do not require any outlets for use. Lights are not required either. You just have to comply with article 410.8 if you want to install them.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="original_200_amp_service_11192006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Original 200 amp service 11/19/2006</B></div> <div> <B>Hello,</B></div> <div> <B>I have a house in Southeastern Massachusetts that was built just 2 years ago and am doing the basement over as an in-law apt. The insulation is great but it’s still all concrete. The living space in the basement area is about 600 sq feet and I was planning on putting in four baseboard strips totaling 5250 watts of electric heat @240 volts (in your opinion, is that too much/too little?). I will have carpeting put over the floors and insulated 2x4 walls to block out the concrete. Three double paneled, standard 29”, low E windows and one 76” insulated door entrance exist. Since it will be used for elderly parents, I thought they tend to be colder more easily, but don't want it so hot they cook. or too cold, I tried using on-line calculators but the results varied from 1700 watts to 6780 watts depending on the site.</B></div> <div> <B>The rest of the house is heated via forced hot air (furnace) and the estimate to extend it to the basement is well over budget.</B></div> <div> <B>My code question is:</B></div> <div> <B>The original service is 200 AMP and the electrician used every spot on the panel. I estimate that between the electric heat and the appliances, lights, bathroom, etc I will need a 100 amp sub-panel to be safe. I was able to combine several circuits together so I freed up 2 spots so I could get a 240 volt main’ breaker in there. First off, I have not been able to find a 100 amp breaker that will fit in the Square D Homeline panel (60 amps is the max). Using a regular 100 amp main panel as a sub panel would require me to tap into the lugs coming in the 200 AMP service before it reaches the 200 AMP main breaker – Is that allowed?</B></div> <div> <B>One idea I have is to free up 2 more spaces, and put two 60 amp breakers in, and have 2 sub panels, one for the electric heat, and one for the rest of the in-law apartment.</B></div> <div> <B>Another idea I have is that one 60 amp sub-panel may be enough for everything but it would be cutting it close if the electric heat, stove, fridge, coffee maker and lights were all on at the same time. </B></div> <div> <B>I am proficient in the physical wring aspect but not in the code aspect. </B></div> <div> <B>Thank you</B></div> <bR> <div> To answer you question, I would have to have a total load calculation. You need someone to calculate that for you. Second, you can't modify a manufactures listed and labled equipment. You need to get a licensed electrical contractor to rewire the basement. I know you are the homeowner, but your questions to me should tell you that you may be over your head and you could make it unsafe for your in-laws.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wire_size_11112006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wire size 11/11/2006</B></div> <div> <B>My question is this, I have a 400 amp service panel and am going to 200 amps approximately 120' to a 200 amp service panel but not sure what wire size is needed between the 400 amp panel and the 200 amp panel. </B></div> <div> <B>Thanks</B></div> <bR> <div> I need more information. Is this a home or commercial building? What is your demand for the 200 amps? Will it be large enough or to small? Will the 400 amp service panel except a 200 amp breaker? The only correct answer I can offer if you have crossed all your "T's" and dotted all your "I's", is a 4/0 aluminum or 2/0 copper conductor will be correct for a dwelling. No answer for a commercial. Please talk to someone local.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="two_circuits_in_a_single_box_10282006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Two circuits in a single box 10/28/2006</B></div> <div> <B>Mr. Stubbs-</B></div> <div> <B>I'm fine-tuning the electrical layout drawings for a complete rewire of a </B></div> <div> <B>historic house, before submitting them it for a rework permit. An </B></div> <div> <B>electrician I know recommends strictly separating the outlet and lighting </B></div> <div> <B>circuits, which is fine with me; outlet circuits will be 20 A and lighting </B></div> <div> <B>circuits 15 A. However, in several places (namely in the bathrooms) I want </B></div> <div> <B>to put a light switch for the sconces in the same box with a GFCI outlet </B></div> <div> <B>(for hair dryers, etc.). My question is: Can I run a lighting and outlet </B></div> <div> <B>circuit within the same box if they are on the same phase? If not (I'm </B></div> <div> <B>guessing not) what would you recommend ? -- separate but close-proximity </B></div> <div> <B>boxes? . . or add those specific outlets onto the lighting circuits?</B></div> <div> <B>Thanks for any suggestions you could give !</B></div> <div> <B>- Dave</B></div> <bR> <div> Yes you can. I assume you are talking about a dwelling unit. According to Article 300.3, you can install all conductors in the same enclosure as long as the voltage ratings are the same.</div> <bR> <div> <B>300.3 Conductors.</B> </div> <div> <B>(C) Conductors of Different Systems.</B> </div> <div> <B>(1) 600 Volts, Nominal, or Less</B>. <I>Conductors of circuits rated 600 volts, nominal, or less, ac circuits, and dc circuits shall be permitted to occupy the same equipment wiring enclosure, cable, or raceway. All conductors shall have an insulation rating equal to at least the maximum circuit voltage applied to any conductor within the enclosure, cable, or raceway.</I><FONT SIZE="3" COLOR="#000000" FACE="Helv" > </FONT></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="finding_outlets_10282006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Finding outlets 10/28/2006</B></div> <div> <B>I am a homeowner. I bought a new built home and ordered an extra couple of phone/cable outlets. I was reimbursed for them because it doesn't appear that they are there (no face plates). But I think that they may have installed them but just covered them up by the drywallers.</B></div> <div> <B>Is there some electrical equipment that I can purchase or rent to locate them?</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>If not how would you suggest a DIY'er find them with the smallest amount of damage and I have never repaired drywall either.</B></div> <div> <B>IF you Don't Stand For Something,</B></div> <div> <B>You Will Fall For Everything!</B></div> <div> <B>Nycole </B></div> <bR> <div> There is equipment that could find those cables. I'm not sure if the test equipment is available in your local electronic stores. I was once a Telephone Repairman for Michigan Bell and we had a tone generator that we connected to the phone jack to trace out broken connections. We also had battery operated probe that would pick up the tone through the walls. You could go to an electrical supply store and purchase/rent a circuit tracer for electrical circuits to be found.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="advice_please_10122006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Advice please 10/12/2006</B></div> <div> <B>DEAR SIR</B></div> <div> <B>PLEASE ADVISE ME WHAT TO DO</B></div> <div> <B>I'M ORDERING A COMMERCIAL BLOW MOLDING MACHINE FROM CHINA heating and main frame comes with it also</B></div> <div> <B>COMES WITH 11 KW AIR COMPRESSOR </B></div> <div> <B>MY QUESTION IS</B></div> <div> <B>WHAT TYPE OF VOLTAGE IS GOOD</B></div> <div> <B>120/240 VOLTS SINGLE PHASE-3 WIRE</B></div> <div> <B>IF IM INCORRECT PLEASE tell me what to do </B></div> <div> <B>Thank you </B></div> <div> <B>Fernando</B></div> <bR> <div> You tell me. You ordered the machine. Did you order it to meet your demands, or are you trying to retrofit to their specifications.</div> <div> First find out what power is available in the building you want to install the equipment in. Do you want single phase or three phase. Three phase is better. Find out if the equipment will have duel voltage taps (240/480) or (208/480). Will it be able to convert from 50 to 60 cycles. Please do your homework first if you have not ordered it yet.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="colol_coding_for_motor_conductor"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Color coding for motor conductor 10/1/2006</B></div> <div> <B>A European-made 230 v. motor for a wood shaper power-feed has a blue lead, a yellow w/ blue trace, and a brown. Which lead would be the ground? Is this normal color coding on imported 230 v. equipment? Thank you for your helpful web site. </B></div> <div> <B>Brent</B></div> <bR> <div> Sorry, I do not have that information for you. You didn't state if this a 3 phase motor, if it is in a metal raceway, etc. If it doesn't have a listing or label, I'm not sure how to help you. Maybe there is an expert out there who will read this article and help us out.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="afci_s_962006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>AFCI's 9/6/2006</B></div> <div> <B>Our inspector says that an AFCI is required on the Pool room lighting circuit for our in-home pool. The electrical panel is way over at the other end of the house and the directions on every brand of AFCI that we have found say that they won't work if the electrical run is over 200 feet. Our 14 gauge runs are well over 200 feet. A regular breaker works fine (15 amp) for our lighting currently, but a 15 amp AFCI trips immediately. How do we get around this issue before our final inspection. All the walls are sealed with concrete, so the wiring is inaccessible. </B></div> <div> <B>Chris</B></div> <bR> <div> Unless there is a local ordinance in your area, this is not a code violation. Article 210.12 requires arc-fault protection in the bedrooms only. Arc-fault and GFCI serve two different purpose. Arc-faults are for arcing of a circuit from faulty wiring or a loose connection. GFCI is for personal protection. Since we are talking about pool lighting and or receptacles, we would be concerned about personal protection. </div> <bR> <div> <B>210.12 Arc-Fault Circuit-Interrupter Protection.</B></div> <div> <B>(A) Definition</B>. <I>An arc-fault circuit interrupter is a device intended to provide protection from the effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-energize the circuit when an arc fault is detected. </I></div> <div> <B>(B) Dwelling Unit Bedrooms</B>. <I>All branch circuits that supply 125-volt, single-phase, 15- and 20-ampere outlets installed in dwelling unit bedrooms shall be protected by an arc-fault circuit interrupter listed to provide protection of the entire branch circuit.</I></div> <bR> <div> On the issues of the distance of two hundred feet, I am not aware of a arc-fault not working at 200 ft. That is quit a distance for a branch circuit in a single family dwelling. Last, you were told that the AFCI won't work over 200 ft, but it does trips out. That is a contradiction. If it is tripping, then it may be picking up a ground to neutral contact. That means it's working.</div> <bR> <div> Try this for a test. Remove the AFCI and replace it with a GFCI. If that trips out, then you do have a ground fault problem. As I said before, arc-faults are only required in bedrooms. <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><A HREF="id45_nfpa_70___may_2001_rop.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U>Click here</U></A></FONT> for the code change on arc-faults.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="conductors_in_same_conduit_8232006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Conductors in same conduit 8/23/2006</B></div> <div> <B>Dear Mr. Stubbs,</B></div> <div> <B>Can we run conductors coming out from two separate (metered) service equipments in the same conduit ?</B></div> <div> <B>It not clear to me that the NEC Article 300.3 below allows it.</B></div> <div> <B>300.3 Conductors.</B><B> </B></div> <div> <B>(C) Conductors of Different Systems.</B><B> </B></div> <div> <B>(1) 600 Volts, Nominal, or Less.</B><B> </B><I><B>Conductors of circuits rated 600 volts, nominal, or less, ac circuits, and dc circuits shall be permitted to occupy the same equipment wiring enclosure, cable, or raceway. All conductors shall have an insulation rating equal to at least the maximum circuit voltage applied to any conductor within the enclosure, cable, or raceway.</B></I><B> </B></div> <div> <B>Regards,</B></div> <div> <B>Uy </B></div> <bR> <div> I understand the question, but I don't understand why you want to share a common raceway with two separate meters. You can if you meet all of the requirements of Chapter 3. Are they going into separate mains? Are they going into a wireway? Did you know if you share a raceway, you will have to derate the conductor sizes? </div> <div> You need to meet with your local inspector and show them why you want to share a common raceway.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="hacr_breaker_8152006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>HACR breaker 8/15/2006</B></div> <div> <B>Mr Stubbs, </B></div> <div> <B>Can you explain the difference between standard and HACR rated breakers. </B></div> <div> <B>Thank you,</B></div> <div> <B>Jerry</B></div> <bR> <div> If my memory serves me right, HACR breaker were introduced in the 80's. Before HACR breakers were put on the market, most manufactures required fuses on the motor equipment because standard breakers would not trips in the needed cycle time to protect the motors from a short circuit ground fault. Once manufactures created a more sensitive breaker, the labels on equipment shows fuse or HACR breakers.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="multi_outlet_used_on_20amp_kitchen"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Multi-outlet used on 20amp kitchen 8/3/2006</B></div> <div> <B>I have seen instances where plugstrips (meeting UL Multi-outlet Device standard) are used to provide 20 AMP small appliance circuit outlets instead of wall mounted outlets. Is this a commonly accepted practice and allowable by NEC?</B></div> <div> <B>Thank you </B></div> <div> <B>Glenn</B></div> <bR> <div> Yes! Multi-outlet assemblies is just another listed manufactures product for your convenience. Sometimes the customer doesn't want wall receptacle showing on the wall or cabinets. There is an advantage to multi-outlets by having single receptacles a few inches apart, out of sight, under the cabinets and over the countertops.</div> <bR> <div> <IMG SRC="1a383fa0.png" border=0 width="387" height="250" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> The above calculations only apply to non-dwelling units</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="temporary_power_7182006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Temporary power 7/18/2006</B></div> <div> <B>Hi Ed, </B></div> <div> <B>I have a question for you. On a request for temporary power, I did everything necessary, but one of the issues that came up was that the eye- bolt for the service needed to be under the weather- head on a Mast that does not go through the roof, I never had that happen in  all my years.. I also met with ---- from the power company on this project, he thought everything was great, </B></div> <div> <B>Do you have any suggestions for me?? </B></div> <div> <B>I would greatly appreciate  </B></div> <div> <B>Thank You, Andrew</B></div> <bR> <div> Never had that happen in all your years. People speed for years in some areas and say they never had  gotten a ticket there before and when they get one, what do they say? </div> <div> Some local power companies have established their own book on rules and regulations and they sometimes clash the Authority Having Jurisdiction. The (AHJ) comply with the articles of the NEC which is our protection and ordinance. Your question is about the eye-bolt, which is the point of attachment in the NEC. The point of attachment is required below the weatherhead from Article 230.54(C)</div> <bR> <div> <B>230.54 Overhead Service Locations.</B></div> <div> <B>(C) Service Heads Above Service-Drop Attachment.</B> <I>Service heads and goosenecks in service-entrance cables shall be located above the point of attachment of the service-drop conductors to the building or other structure.</I></div> <div> <I>Exception: </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I><U>Where it is impracticable</U></I></FONT><I> to locate the service head or gooseneck above the point of attachment, the service head or gooseneck location shall be permitted not farther than 600 mm (24 in.) from the point of attachment.</I></div> <bR> <div> Notice the words "where it is impracticable", was yours impracticable or more than 24 in.? </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="question_on_grounding_7152006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Question on grounding 7/15/2006</B></div> <div> <B>Hi, </B></div> <div> <B>I'm installing the meter base and the panel and had a question about grounding. It seems the panel has a separate lug for the ground cable however, the meter socket has only a single ground lug. I currently have 2 rods installed with a ground cable attached to the meter. How do I ground the panel? Does the panel need to be grounded? </B></div> <div> <B>Thanks, Erik</B></div> <bR> <div> I don't know where your e-mail is coming from, but all meters to my knowledge are already grounded to the meter enclosure. Article 250.4 requires that all metal enclosures be bonded to the grounded conductors ahead of the main.</div> <div> <B>250.4 General Requirements for Grounding and Bonding.</B></div> <div> <I>The following general requirements identify what grounding and bonding of electrical systems are required to accomplish. The prescriptive methods contained in Article 250 shall be followed to comply with the performance requirements of this section.</I></div> <div> <B>(A) Grounded Systems.</B></div> <div> <B>(3) Bonding of Electrical Equipment.</B> <I>Non–current-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the electrical supply source in a manner that establishes an effective ground-fault current path.</I></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1a2834d0.png" border=0 width="387" height="333" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="e_mailing_elecpics_6262006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>E-mailing Elecpics 6/26/2006</B></div> <div> <B>Hello Ed, </B></div> <div> <B>I'm a frequent student of yours and thought you might like these pictures. I've never done anything as bad as this stuff!The message is ready to be sent with the following file or link attachments</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" >:</FONT></div> <div> <A HREF=" http://www.elec-toolbox.com/Pics/elecpics" TARGET="_top" TITLE=" http://www.elec-toolbox.com/Pics/elecpi"><U><U>http://www.elec-toolbox.com/Pics/elecpics.htm</U></U></A></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="nec_ampacity_table_6262006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>NEC ampacity table 6/26/2006</B></div> <div> <B>Mr. Stubbs,</B></div> <div> <B>I found your website online when querying an NEC question. I would like to get your opinion on some of the ampacity sections of the NEC. </B></div> <div> <B>As you are well aware there are ampacity charts based upon conductors in free air vs conductors in conduit. </B></div> <div> <B>Please consider the following scenario:</B></div> <div> <B>A panel shop builds a control panel with numerous components and multiple wire sizes represented. Also, this control panel has a large starter and the motor requires 2/0 AWG conductors to satisfy its current requirements. </B></div> <div> <B>What about the power wiring from the MCP (or Circuit Breaker), which is also in the control panel, to the Motor Starter? Should these conductor ampacities be based upon the conduit ratings or the free air ratings or somewhere in between? My question stems from the fact that these conductors aren't in free air but also aren't crowded together in a conduit. </B></div> <div> <B>Thanks in advance for looking at this question.</B></div> <div> <B>Ralph</B></div> <bR> <div> I will make this a simple answers. The only time you rate conductors for free air is when the actual conductors are <B>IN THE FREE AIR. </B>The reason why the conductors can be reduced in the free air because the conductors will dissipate all heat on the conductors no matter how high the ambient temperature. The conductors everywhere else shall be rated by the correct tables allowed in Article 310. Those conductors can not dissipate heat if they are enclosed in a raceway or cabinet. Have you ever noticed that the overhead conductor size from the power company is larger than the conductors coming out of your riser raceways? Got it?</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="three_prong_test_indicator_6242006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Three prong test indicator 6/24/2006</B></div> <div> <B>Ed Stubbs,</B></div> <div> <B>I saw your website, so I thought I'd send in a question. I'm testing a three prong outlets and on two outlets I get the following indication. The two amber lights, but the right light is dimmer than the left. I then press the GFCI test button and the get a Hot/neutral indication. This is not a normal GFCI location (dinning room and master bedroom) and none of the other outlets in the home give this indication, they all check good. Any idea what’s going on here? Your assistance would be greatly appreciated.</B></div> <div> <B>Chris</B></div> <bR> <div> Since I don't know what brand you have, I can only guess what your problem is. My best guess is that you have an open ground on those circuits. When you press the GFCI test button, the test sends a high resistance short between the ground and the neutral which bypasses the sensing coil in the tester. If there is no ground connection from the source, it will dim down and not trip the GFCI device. <A HREF="id24_1__three_prong_receptacle_tester.htm" TARGET="_top" TITLE="Tips Hints"><U>See Three prong receptacle tester</U></A></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="big_problem_6162006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Big problem 6/16/2006</B></div> <div> <B>Hello. this is one of my biggest problem in electrical installations. I'm not sure how to install a 110 v outlet. the ground contact its going to the top or to the bottom?</B></div> <div> <B>Manuel</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" >. </FONT></div> <bR> <div> Your choice. There is this roomer going around that the ground shall be at the top of the receptacle. The NEC does not concern it self with the direction of the ground. It is not a safety issue. The story is that if the ground is on the bottom of the receptacle and the metal cover falls in between the hot and neutral contacts on the plug, it will cause a short. If the ground is facing up, the metal cover will be stopped by the ground prong on the grounded 3 contact plug. Well, this is a good theory if all covers are metal. All plugs are 3 wire with a ground. All receptacles are 3 prong instead of a 2 wire ungrounded receptacle. Manufactures of receptacles make the choice of the ground on the top or bottom of the plug. What about the <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><U>sideways receptacles?</U></FONT></div> <div> Look at the <U>test and reset</U> button on the right picture and turn it over.</div> <div> <IMG SRC="1a08fb40.png" border=0 width="399" height="436" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"><IMG SRC="1a190c80.png" border=0 width="400" height="456" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="4_family_residence_6162006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>4 Family residence 6/16/2006</B></div> <div> <B>Question... The Massachusetts state code and the Mass. state NFPA code both state that in a 6 family dwelling unit or more, a low voltage monitored system shall be installed. There is no where in any code electrical, fire or otherwise stated, that in a 4 family dwelling unit the electrician MUST put a low voltage supervised plenum rated commercial fire system in. So my question here is, Do I NEED to install a 110 system with battery backups interconnected through all units and be done with this project, or do I NEED to install a supervised commercial style fire system with pull stations and all the bells and whistle? I was told by the fire inspector he doesn't mind a 110 system installed but he wants to know when it goes off and which unit the fire is in.... the building inspector wants both 110 and low volt... and the electrical inspector doesn't care what we put in. </B></div> <div> <B>Please help and Thank you, </B></div> <div> <B>Dave</B></div> <bR> <div> I'm not a resident of Massachusetts nor do I know the Mass. State NFPA code. My guess is that the NFPA (National Fire Protection Association) is the same in your state as ours without modification. <A HREF="#aritcle_760_622006" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U>See Article 760 question below </U></A> The State of Georgia requires that all smoke detectors in the same unit be interconnected together with battery backup in each smoke detector. You maybe right about a low voltage <B>supervised plenum rated </B><B><U>commercial</U></B> fire system not being required in a <B>non-supervised 4 family </B><B><U>dwelling</U></B>, but please check with your local municipality for a possible amendments.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  <A NAME="the_smartest_man_alive_6132006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <B>The smartest man alive 6/13/2006</B></div> <div> <B>Hi, I'm from NJ, and I found your website by searching National electrical code 2005 swimming pool pump motor plug specifications New Jersey" </B></div> <div> <B>I practice immigration law at my own nonprofit law office where I charge a nominal fee for doing the same thing private for-profit lawyers do. So I recognize when someone else does something truly good for others, like your website. My hat off to you, sir! </B></div> <div> <B>I bought a house last year in E------, New Jersey, and I wanted to install an above ground swimming pool. That led me to the city building inspector. I told him I was going to do it myself, learning along the way. He laughed, "Good luck. You'll need it." He was a grumpy old man. I asked many questions. When I got to the electrical, he said, "Hire an electrician." I asked, "What was I hiring the electrician to do?" "Just hire an electrician, and tell him your putting up a pool, he'll know what to do." I asked, "I'd like to know what the electrician is supposed to be doing so I don't get ripped off." He half spoke and half grumped with an irritated look as he turned and walked away from the counter, "Just hire an electrician." So, I went online and typed my address and searched for an electrician. I found one recommended by ------. He came to my house, and we agreed on $500. if I dig the twenty five foot trench from the back of the house to the pool. I learned my neighborhood used to be a dumping ground for rock filled dirt from home construction over 100 years ago. My house is 101 years old. He said, "dig the trench two feet wide two feet deep from the house to one foot from the pool. I did it. The electrician installed the electrical wire in a plastic tube rising out of the ground at one foot from the pool, plugged in the pump and walah; it worked fine. The city inspector came out, took one look and said the outlet has to be five feet from the pool, failed me, and instantly left. The electrician came back and moved the outlet to five feet from the pool complaining about -------- having stupid unusual rules. The inspector came back, and said the plug wire from the motor has to be 3 feet not six, it has to be a single receptacle with a twist lock not a double regular house outlet. He said it had to be grounded, and bonded. The electrician returned grumbling more about the city idiots. Each time, my wife and him cooked him a nice complete meal with meat potatoes vegetables, salad, and a piece of fruit! The city came back and failed him again! This time the inspector was very  angry. I asked, "Maybe this electrician is not familiar with -------- rules. the inspector looked at me incredulously and said, squeezing out every line in his forehead, "These are national rules! If he's licensed, he should know this. As a matter of fact, you tell him to come to my office this Thursday or we're going to pull his license in ------, and don't you dare pay him more money. The electrician came back and replaced the outlet and the wiring and he grounded and bonded the pool etc. The city again failed him for not putting the second outlet in further from the pool, closer to the house. The electrician came back. Then, from July 3 to Sept. 4th, the pool finally passed inspection. I was low on cash, so my brother paid agreed to pay him, and I would pay my brother back in two weeks. My brother called me, "I paid the electrician, so all together it's $650." I asked, "what's 650? The price was $500?" My brother replied, "He said he ran a second line so you can listen to the radio outside." I said, "NO, no, no, that second line is part of the requirement of electrifying the pool." The electrician finally answered the phone when I called from a new number his called id did not recognize, and I told him that I was going to press charges for theft in NJ of lying about the final bill to the financier. He made the agreement with me the homeowner, then told the payer it was a higher amount out of fraud. He gave me the money back after complaining that he has 3 kids and a divorce and he's late on his utility bills. I said, "that's not my fault. He was hired to do something, it's not my fault he did it wrong." I went to the library and checked out the 2005 NEC section about swimming pools, and I was amazed how black and white in plain type the wiring section was. Mixed in was fountains etc. but if you took all the swimming pool parts and put them together, its only a few pages of reading, and I know nothing about electricity other than how to pronounce watt, ohm, volt and amp. I think the amps is what kills you in the electric chair. I found your website, and I am going to pass it on to every homeowner I find. My question to you is, how can I spread your website to increase your income or profits? Robert </B></div> <bR> <div> Just give them my website address and I thank you very much for your comments.</div> <div> I have done a little modification on your question by deleting the names and locations of your complaints. Being discrete is very important when publishing a website. I'm not here to slander or pass judgment on anyone. Just help them with questions that I can answer or keep you informed. This website is free to the beholder and dedicated those who like it.</div> <div> Again, thank you for you comment. Ed Stubbs</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="circuit_question_6122006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Circuit question 6/12/2006</B></div> <div> <B>If I were to install 40 lights fixtures in a building, each on to be equipped with a 175-watt, 120-volt lamp. What is the minimum number of 15-amp, 120-volt circuits that would be required for these lights? </B></div> <div> <B><U>Byron</U></B></div> <bR> <div> 40 X 175 = 7,000 X 125% = 8750 watts / 120 volts = 72.92 amps / 15 = 4.86 = 5-15 amp breakers</div> <bR> <div> 40 X 175 = 7,000 X 125% = 8750 watts / 120 volts = 72.92 amps / 20 = 3.66 = 4-20 amp breakers</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="dedicated_equipment_space_652006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Dedicated equipment space 6/5/2006</B></div> <div> <B>I'm doing electrical renovation to a hospital building with a boiler room; the ceiling of this space is the roof structure and is about 20’ above the floor.</B></div> <div> <B>There are various liquid piping systems in this room – the locations of these are such that it is about impossible to locate proposed new panels without having pipes between the panels and the structural ceiling of the space.</B></div> <div> <B>My question is this: Can I install the panels at the desired location and build a 3 or 4 sided enclosure with its own ceiling structure at 8’ above the boiler room floor, and meet the intent of 110.26 ?</B></div> <div> <B>If so, what construction specifications would be imposed for the enclosure and related ceiling – e.g., drywall and metal studs for the walls, with a fire rated plywood ceiling, vs. masonry wall construction and a pre-cast or poured concrete ceiling?</B></div> <div> <B>Thanks</B></div> <div> <B>Lou</B></div> <bR> <div> You don't need to build a 3 or 4 sided enclosure to comply. The key to understanding 110.26 is the division of requirements for spaces about electrical equipment in two separate and distinct categories: working space and dedicated equipment space. Working space generally applies to the protection of the worker, and dedicated equipment space applies to the space reserved for future access to electrical equipment and to protection of the equipment from intrusion by nonelectrical equipment. The performance requirements for all spaces about electrical equipment are set forth in the first sentence. Storage of materials that blocks access or prevents safe work practices must be avoided at all times. </div> <bR> <div> <B>110.26 Spaces About Electrical Equipment.</B></div> <div> <I>Sufficient access and working space shall be provided and maintained about all electric equipment to permit ready and safe operation and maintenance of such equipment. Enclosures housing electrical apparatus that are controlled by lock and key shall be considered accessible to qualified persons.</I></div> <div> <B>(F) Dedicated Equipment Space.</B> </div> <div> <B>(1) Indoor.</B> <I>Indoor installations shall comply with 110.26(F)(1)(a) through (d)</I>.   </div> <div> <B>(a)     Dedicated Electrical Space.</B> <I>The space equal to the width and depth of the equipment and extending from the floor to a height of 1.8 m (6 ft) above the equipment or to the structural ceiling, whichever is lower, shall be dedicated to the electrical installation. No piping, ducts, leak protection apparatus, or other equipment foreign to the electrical installation shall be located in this zone. </I></div> <div> <I>Exception: Suspended ceilings with removable panels shall be permitted within the 1.8-m (6-ft) zone.</I><I> </I></div> <div> <B>(b)     Foreign Systems.</B><I> The area above the dedicated space required by 110.26(F)(1)(a) shall be permitted to contain foreign systems, provided protection is installed to avoid damage to the electrical equipment from condensation, leaks, or breaks in such foreign systems.</I></div> <div> <I><B>(c)     Sprinkler Protection.</B></I><I> Sprinkler protection shall be permitted for the dedicated space where the piping complies with this section. </I></div> <div> <B>(d)     Suspended Ceilings.</B><I> A dropped, suspended, or similar ceiling that does not add strength to the building structure shall not be considered a structural ceiling.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="aritcle_760_622006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Article 760 6/2/2006</B></div> <div> <B>Ed,</B></div> <div> <B>My question involves the applicability of Article 760 of the NEC to single station smoke detectors. My understanding is that Article 760 only applies to fire alarm “systems” and would not apply to single station smoke detectors that are not wired to a fire alarm system. Is my understanding correct? Thanks for your help. </B></div> <div> <B>Jonathan</B></div> <bR> <div> Yes and no. Where there is smoke, there is fire. Smoke detectors are part of the fire alarm system. Now we have to find use for a single station smoke detector that is separate from the fire alarm system. That can be found in retirement homes where tenants have different units or apartments with smoke detectors of there own, or units with smoke detectors that are connected to the fire alarm system monitor and will only activate all of the alarms by someone controlling the system by manual controls. Most Management properties don't want unit smoke detectors to set off the whole building because someone decides burn the cooking oil. This article does not apply to one and two family homes or fire separated townhouses. </div> <bR> <div> <B>I. General</B></div> <div> <B>760.1 Scope.</B></div> <div> <I>This article covers the installation of wiring and equipment of fire alarm systems including all circuits controlled and powered by the fire alarm system.</I></div> <div> <B>FPN No. 1:</B><FONT SIZE="2" COLOR="#000000" FACE="Arial" >Fire alarm systems include fire detection and alarm notification, guard’s tour, sprinkler waterflow, and sprinkler supervisory systems. Circuits controlled and powered by the fire alarm system include circuits for the control of building systems safety functions, elevator capture, elevator shutdown, door release, smoke doors and damper control, fire doors and damper control and fan shutdown, but only where these circuits are powered by and controlled by the fire alarm system. For further information on the installation and monitoring for integrity requirements for fire alarm systems, refer to the NFPA 72®-1999, National Fire Alarm Code®. </FONT></div> <bR> <div> Article 760 covers only those circuits that are powered and controlled by the fire alarm system, including fire safety features such as smoke door control, damper control, fan shutdown, and elevator recall. Circuits powered and controlled by other building systems such as heating, ventilating, and air conditioning (HVAC); security; lighting controls; and time recording are covered by Article 725. </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <U><IMG SRC="19e40f70.png" border=0 width="320" height="247" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="calculating_loads_5312006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Calculating loads 5/31/2006</B></div> <div> <B>Hi, </B></div> <div> <B>I am calculating a load for an Owner's Panel for an apartment building. The owner wants to add 10 washers and 10 dryers. The dryers have a power rating of 30A/ 1ph/240/208v. Calculating the loads of the dryers (only), the minimum service size would be 300A. This does not even take into account the size of the water heaters. This seems unreasonably large. Should I calculate at 100%? </B></div> <div> <B>Regards, </B></div> <div> <B>Gia</B></div> <bR> <div> Just looking at your question tells me that you need a little more study in calculations. Please don't be offended, because, 75% of my students that are taking the test for their State Electrical Contractor's Licenses had very little understanding of service calculations. I cannot teach you calculation on this web site, but I will give you the answer on the optional calculation. (1)The answer is based on the calculated load, not the connected load. (2) The calculation is not totaled from the overcurrent, but by the nameplate ratings in watts. (3) The service is calculated from the complete demand of all unit involved. I have no idea what size you have now. I'm sure this is a 10 unit apartment.</div> <div> Washers        1500 watts  X  10  =  15,000 watts</div> <div> Dryers            5000 watts  X  10  =  <U>50,000</U> watts</div> <div> Total                                                    65,000 watts</div> <bR> <div> Table 220.84  (65,000 X 43%) = 27,950 watts / 240  =  116.5 amps = 125 amp main for the washer and dryer alone.</div> <div> Your service conductors have to increase by 116.5 amps and you main has to increase to the next size with the total calculated load up to 800 amps.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  <A NAME="under_home_wiring_5272006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <B>Under home wiring 5/27/2006</B></div> <div> <B>I have a 1950s home with a crawl space under it that I found two separate cases where a previous owner had run NM wire under the house in order to install outlets for window ACs.. While I expect running wire under a home is not common practice, is it acceptable?</B></div> <bR> <div> Yes, conductor can be installed under the house and in the attic. They shall comply with Article 334. <A HREF="#branches_in_finished_garage_572006" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U>See Branches in finished garage</U></A></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="adding_a_subpanel_5232006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Adding a subpanel 5/23/2006</B></div> <div> <B>Hi Ed </B></div> <div> <B>When I built my home I set it up for a future Barn. </B></div> <div> <B>Roughly 350lf away from my house panel. I have 1-1/2" </B></div> <div> <B>PVC buried and have the pull rope in the conduit. I have purchased a 100 amp panel and have a 50 amp breaker set aside in the house panel. </B></div> <div> <B>With the cost of copper being out of site right now, can I use aluminum? What size? How many and do I need to pull a ground wire thru the conduit? </B></div> <div> <B>Thanks </B></div> <div> <B>Kurt</B></div> <bR> <div> Weather you use copper or aluminum, you will have to run a minimum of 3 conductors with or without a ground. If you run aluminum, <B><U>all</U></B> conductors shall be insulated,and not just covered. If you run copper, all shall be required to be insulated except the equipment grounding conductor. For the sake of the distance and voltage drop, I suggest a minimum of 3- #1 Aluminum and a # 6 awg aluminum insulated equipment grounding conductor or a # 8 awg copper equipment grounding conductor</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1458f780.png" border=0 width="399" height="376" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="panelboards_5232006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Panelboards 5/23/2006</B></div> <div> <B>Can you use panelboards as a busway. in the apartment building they have 8 meter sockets and 8 panelboards in series. and the branch circuit wires go through each panelboard till it reaches a troft and then exits through pipe to each apartment. </B></div> <div> <B>Dale </B></div> <bR> <div> I can't speak for the local power company, but they can be run through the panelboards. You can't exceed 40% in any cross section space. I will never understand why a contractor would install circuits in that manor. I can't see letting my crew troubleshoot branch circuits passing through other hot meters without killing the power. I still teach my students not to put the panelboard in the garage back to back with the meter. Add up the cost for <B>one</B> feeder run to a panelboard somewhere in the home and compare to 42 separate branch circuit runs throughout the home. Labor is higher for all of those pulls. </div> <bR> <div> <B>312.8 Enclosures for Switches or Overcurrent Devices</B>.</div> <div> <I>Enclosures for switches or overcurrent devices shall not be used as junction boxes, auxiliary gutters, or raceways for conductors feeding through or tapping off to other switches or overcurrent devices, unless adequate space for this purpose is provided. The conductors shall not fill the wiring space at any cross section to more than 40 percent of the cross-sectional area of the space, and the conductors, splices, and taps shall not fill the wiring space at any cross section to more than 75 percent of the cross-sectional area of that space.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="power_to_garden_shed_5182006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Power to garden shed 5/18/2006</B></div> <div> <B>Hello , I want to run 12/2 UF cable off my 100 amp panel in my house to a shed. The cable run would be 110 feet in 3/4 inch pvc conduit(35 feet under house in crawl space and 75 feet underground) to the shed. I was planning on using a GFI breaker rated at 15 amps to be on the safe side. Would 12/2 be sufficient for 15 amps at that run or would the UF cable heat up too much. </B></div> <div> <B>Thank you for your time! </B></div> <div> <B>Aaron</B></div> <bR> <div> The overcurrent device at 15 amps will be OK if you don't plan to use any heavy current pulling, but the 20 amp overcurrent device is allowed. My biggest concern is the distance that you are running the cable. As I said before, 15 or 20 amps is OK, but what if your load is maximum? You have to consider voltage drop on distance and your load. This could cause heavy ware and damage to the equipment used. I would change the wire size to # 10 awg.</div> <div> By the way, you don't have to install UF Cable in a raceway. It is direct burial cable.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="2_awg_wire_ground_5132006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>2 awg wire ground 5/13/2006</B></div> <div> <B>I am presently running 210 feet of #2 THHN/THWN wire underground in 80 gauge conduit for a welder in a detached garage. Two wires of #2 will be for the 240 volt current. What size grounding wire do I need? I will be using a 50 amp fuse breaker. The ampacity of the wire is 85. Should I obtain a higher amp breaker?</B></div> <div> <B>Enjoy reading your site. Thanks for your help.</B></div> <bR> <div> I think you're trying to say schedule 80 conduit. What size grounding do I need? Just size according to Article 250.122 on the primary side. All metallic equipment is required to be grounded. You'll be surprised when I tell you none on the secondary side. Grounding is normally required for protection on the secondary side of derived systems, but welders are designed for shorting conductors together to weld parts. If you ground the welder cause excessive and potentially degrading of the grounding.</div> <bR> <div> <B>250.86 Other Conductor Enclosures and Raceways.</B></div> <div> <I>Except as permitted by 250.112(I), metal enclosures and raceways for other than service conductors shall be grounded.</I></div> <bR> <div> FPN:<FONT SIZE="1" COLOR="#000000" FACE="Arial" >Section 250.86 requires grounding, bonding, and ensured electrical continuity of all enclosures and metal raceways. Connectors, couplings, or other similar fittings that perform mechanical and electrical functions must ensure bonding and grounding continuity between the fitting, the metal raceway, and the enclosure. Metal enclosures must be grounded so that when a fault occurs between an ungrounded (hot) conductor and ground, the potential difference between the non-current-carrying parts of the electrical installation is minimized, thereby reducing the risk of shock. </FONT></div> <div> <B>630.15 Grounding of Welder Secondary Circuit.</B></div> <div> <I>The secondary circuit conductors of an arc welder, consisting of the electrode conductor and the work conductor, shall not be considered as premises wiring for the purpose of applying Article 250.</I></div> <bR> <div> FPN:<FONT SIZE="1" COLOR="#000000" FACE="Arial" >In theory and in accordance with the NEC definition of separately derived system, the secondary circuit of an arc welder could be viewed as such a system. However, the intended operation of a welder is to create a high-current circuit between the electrode and the work surface. In the normal operation of an ac power distribution system, such an event would be considered a fault, and the operation of an overcurrent device to open the circuit and clear the fault is a fundamental concept of Articles 240 and 250. In the case of an arc welder, the opening of an overcurrent device is not intended unless the welding operation significantly exceeds the operating parameters of the welder. Grounding of a welder secondary terminal has the potential to cause excessive and potentially degrading parallel currents on power system equipment grounding conductors. </FONT></div> <div> This new requirement clarifies that for the purposes of Article 250, specifically the requirements covering grounding of separately derived systems, the secondary circuit of a welder is not treated as premises wiring and is not required to be grounded as such. This new wording modifies Article 250 for the purposes of electric welder secondary circuits and thereby removes any potential conflict where grounding in the welder secondary circuit occurs at the work object.  </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="out_door_pool_circuit_592006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Outdoor pool circuit 5/9/2006</B></div> <div> I<B> read your answer regarding no need for GFI when a pool pump is wired directly dated 1-21-2006. However, in reading the 2005 NEC, section 682.33 states "All circuits rated not more then 60 amps at 120-250 volts installed outdoors for equipment in or adjacent to …. bodies of water shall have GFCI protection". I have an outdoor sub-panel that supplies a 20 amp circuit to a pump located about 8 feet from a pool. </B></div> <div> <B>I am confused. Do I need to GFI protect this circuit if it is wired direct? </B></div> <div> <B>Thanks, Mark</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <bR> <div> What kind of pool do you swim in?</div> <div> Well mark, I hate to bust your bubble again because, you're in the wrong code section. Article 682.33 is "Natural and Artificially Made Bodies of Water" not Article 680 for Swimming Pools.</div> <bR> <div> Let me tell you, I won't be swimming around in Article 682 with anyone.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="send_me_a_sketch_582006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Send me a sketch 5/8/2006</B></div> <div> <B>please send me a sketch of a new residential electrical service(200amp), using service entrance cable. please include correct grounding methods</B></div> <bR> <div> A sketch? Who are you, and what have you done to the electrician?</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="branches_in_finished_garage_572006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Branches in finished garage 5/7/2006</B></div> <div> <B>Hello, </B></div> <div> <B>My question: </B></div> <div> <B>I plan to extend branches inside my finished garage, borrowing power from an existing outlet. the wire will run outside the drywall. Can I use Romex or do I have to use a metal flexible conduit? </B></div> <div> <B>Thanks, </B></div> <div> <B>Chris  </B></div> <div> <B>SJ, CA</B></div> <bR> <div> NM-B (brand name Romax) can be run outside of the drywall under the requirements of Article 334. Please check with your local municipality for local ordinances.</div> <div> <B>ARTICLE 334 Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS</B></div> <div> <B>(A) Type NM</B>. T<I>ype NM cable shall be permitted as follows:   </I></div> <div> <I>(1)     For both exposed and concealed work in normally dry locations except as prohibited in 334.10(3). </I></div> <div> <B>334.15 Exposed Work</B>.</div> <div> <I>In exposed work, except as provided in 300.11(A), the cable shall be installed as specified in 334.15(A) through (C).</I></div> <div> <B>(A) To Follow Surface</B>. T<I>he cable shall closely follow the surface of the building finish or of running boards. </I></div> <div> <B>(B) Protection from Physical Damage</B>. <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>The cable shall be protected from physical damage where necessary by conduit, electrical metallic tubing, Schedule 80 PVC rigid nonmetallic conduit, pipe, guard strips, listed surface metal or nonmetallic raceway, or other means.</I></FONT><I> Where passing through a floor, the cable shall be enclosed in rigid metal conduit, intermediate metal conduit, electrical metallic tubing, Schedule 80 PVC rigid nonmetallic conduit, listed surface metal or nonmetallic raceway, or other metal pipe extending at least 150 mm (6 in.) above the floor.</I></div> <div> <B>(C) In Unfinished Basements.</B> <I>Where the cable is run at angles with joists in unfinished basements, it shall be permissible to secure cables not smaller than two 6 AWG or three 8 AWG conductors directly to the lower edges of the joists. Smaller cables shall be run either through bored holes in joists or on running boards</I>. <FONT SIZE="1" COLOR="#000000" FACE="Arial" ><A HREF="#under_home_wiring_5272006" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U>(back to under home wiring)</U></A></FONT></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="underground_wiring_572006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Underground wiring 5/7/2006</B></div> <div> <B>Hello, </B></div> <div> <B>Question: </B></div> <div> <B>I am running a 220v line out for my spa, and a need to go underground for about 35ft. </B></div> <div> <B>What type of wire and conduit should I use? </B></div> <div> <B>How deep do I need to run the lines? </B></div> <div> <B>Thanks, </B></div> <div> <B>Chris </B></div> <div> <B>SJ, Ca </B></div> <bR> <div> As always, check with your local municipality before installing your equipment. </div> <div> You don't have many choices on the wiring methods you can use when it comes to pools and spas. You shall install the raceways according to Article 680-swimming Pools</div> <div> <B>Spa or Hot Tub</B>. <I>A hydromassage pool, or tub for recreational or therapeutic use, not located in health care facilities, designed for immersion of users, and usually having a filter, heater, and motor-driven blower. It may be installed indoors or outdoors, on the ground or supporting structure, or in the ground or supporting structure. Generally, a spa or hot tub is not designed or intended to have its contents drained or discharged after each use.</I></div> <div> <B>680.10 Underground Wiring Location.</B></div> <div> <I>Underground wiring shall not be permitted under the pool or within the area extending 1.5 m (5 ft) horizontally from the inside wall of the pool unless this wiring is necessary to supply pool equipment permitted by this article. Where space limitations prevent wiring from being routed a distance 1.5 m (5 ft) or more from the pool, such </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I><B>wiring shall be permitted where installed in rigid metal conduit, intermediate metal conduit, or a nonmetallic raceway </B></I></FONT><I>system. All metal conduit shall be corrosion resistant and suitable for the location. The minimum burial depth shall be as given in Table 680.10.</I></div> <div>                                                                 <FONT SIZE="4" COLOR="#0000FF" FACE="Arial" ><B>  Table 680.10 Minimum Burial Depths</B></FONT></div> <div>                                                               <B>Wiring Method</B></div> <div>                                                                                                                             Minimum Burial</div> <div>                                                                                                                                mm             in.</div> <div>                                                               Rigid metal conduit                               150              6</div> <div>                                                               Intermediate metal conduit                   150              6</div> <div>                                                               Nonmetallic raceways listed </div> <div>                                                               for direct burial without </div> <div>                                                               concrete encasement                            450            18</div> <div>                                                               Other approved raceways*                   450            18</div> <div> *Raceways approved for burial only where concrete encased shall require a concrete envelope not less than 50 mm (2 in.) thick.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="height_of_duplex_plug_532006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Height of duplex plug 5/3/2006</B></div> <div> <B>Dear Mr. Stubbs: Great website. I have a simple question. I am building a log home in N. Georgia and the package came with notched out starting logs. The log company told me this is where my receptacles would be located. In effect, all my receptacles will end up 3" from and parallel to the floor located in the baseboards. I want to verify that this will meet GA code requirements. Thank you, Ron </B></div> <bR> <div> How low can you go?</div> <div> Not a problem at all. No GA code amendments. There is no minimum height for a receptacle in a dwelling. Receptacles can be in the floor in any habitable room. </div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="double_landing_512006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Double landing 5/1/2006</B></div> <div> <B>My question is on a single pole breaker can you land two wires. One wire to a recpt. and other to a separate recpt. Same circuit but two separate wires. If not why? Can you help? </B></div> <div> <B>-David</B></div> <bR> <div> Only if the manufacture has the breaker listed for two conductors. Quick solution: Come out of the breaker with one conductor, one from each receptacle and put the three conductors in a proper size wirenuts and you are set. Wa-la</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="breaker_sizing_512006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Breaker sizing 5/1/2006</B></div> <div> <B>We manufacture Energy Saving Motor Controllers, When sizing a breaker to our unit-what size of breaker do you need for a 480 volt 500 amp motor controller?</B></div> <div> <B>Thank you</B></div> <div> <B>Robert</B></div> <bR> <div> I am surprised that you don't have an engineer or a motor control specialist on your staff. If the motor controllers are a manufactures assembly, your guide lines for sizing will be different.</div> <div> You have four choices on sizing the short-circuit-ground-fault protection from article 430.52. Non-time delay fuse at 300%,duel element time delay fuse at 175%, instantaneous breaker at 800% and the inverse time breaker (common use) at 250%. Since you did mention a breaker, I will say you will use the least expensive inverse time breaker at 250%. </div> <div> The first steps you need to take is finding the horsepower (HP) rating on the motor and comply with Article 430.6. This will require that you use tables:430.147,148,149, or 150. I believe that you will be using Table: 430.150 for 3 phase motors. When you use the table, you shall use the HP rating on the motor and find it on the table with the motor voltage and that will tell you the amp rating you must use to calculate the wire size at 125% and the breaker size at 250%. You still have the options of the other three  short-circuit-ground-fault protections. <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>The name plate ampacity shall be used for the overload protection only.</B></FONT> The overload protects the motor from have excessive amount of currents while running and will trip or open the motor controller. The  short-circuit-ground-fault protection is for a short or ground fault on the motor circuitry and conductors to the motor.</div> <bR> <div> <B>430.6 Ampacity and Motor Rating Determination</B>.</div> <div> <I>The size of conductors supplying equipment covered by Article 430 shall be selected from the allowable ampacity tables in accordance with 310.15(B) or shall be calculated in accordance with 310.15(C). Where flexible cord is used, the size of the conductor shall be selected in accordance with 400.5. The required ampacity and motor ratings shall be determined as specified in 430.6(A), (B), and (C).</I></div> <div> (<B>A) General Motor Applications</B>. <I>For general motor applications, current ratings shall be determined based on (1) and (2).</I></div> <div> <B>(1) Table Values</B>. <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>The values given in Table 430.147, Table 430.148, Table 430.149, and Table 430.150</I></FONT><I>, including notes, </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>shall be used to determine the ampacity of conductors or ampere ratings</I></FONT><I> of switches, branch-circuit short-circuit and ground-fault protection, i</I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>nstead of the actual current rating marked on the motor nameplate.</I></FONT><I> Where a motor is marked in amperes, but not horsepower, the horsepower rating shall be assumed to be that corresponding to the value given in Table 430.147, Table 430.148, Table 430.149, and Table 430.150, interpolated if necessary.</I></div> <div> <B>(2) Nameplate Values.</B><I> Separate motor overload protection shall be based on the motor nameplate current rating.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="smoke_alarms_4272006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Smoke alarms 4/27/2006</B></div> <div> <B>Ed,</B></div> <div> <B>I am unclear on the rules for wiring in a smoke alarm circuit for a house. I have heard everything from all smoke alarms should be interlocked together and that they need their own circuit to just adding the alarm to the bedroom receptacle circuit is sufficient. Does the state of GA have it's own requirement? Is there special codes for new construction? Also, where do the alarms have to be placed in a home?</B></div> <div> <B>Thanks,</B></div> <div> <B>Tim</B></div> <bR> <div> Let's see if I can clear this question up. All newly installed smoke detectors shall be interlocked together and shall have a battery backup. They can be on any circuit in the home except the bathroom, kitchen or laundry circuit which shall have no other outlets. Currently the State of Georgia has an amendment only requiring smoke detectors within 10 feet of any bedroom and a minimum of one on each level. On January 1, 2007, the State will amend the current ruling a revert back to a smoke detector in every bedroom and a minimum of one on each floor that shall be interconnected with a battery backup</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="6_ft_above_equipment_4252006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>6 Ft above equipment 4/25/2006</B></div> <div> <B>Ed,</B><B> </B></div> <div> <B>Great website. I was very interested in your answer to the question entitled "Tankless water heater 11/2/2005" because I am encountering a situation where there is gas piping above the (otherwise) ideal location for a subpanel. Your diagram seems to imply that piping is permitted above an electric service panel as long as it is above a suspended ceiling, without consideration of the 6 feet of clearance mentioned in 110.26(F)(1)(a). While I recognize that the same article of the code allows for the structural ceiling itself to encroach on the 6 feet of clearance, I did not think it allowed for any piping above the suspended ceiling to violate the 6 feet clearance. In fact, it specifically mentions in 10.26(F)(1)(d) that the suspended ceiling shall not be considered as a structural ceiling. </B></div> <div> <B>Can you please clarify if the 6 foot clearance mentioned in 10.26(F)(1)(a) should apply to your diagram for the "Tankless water heater 11/2/2005" article?</B> </div> <div> <B>Thanks,</B></div> <div> <B>Eric</B></div> <div>  <A NAME="eric_i_can_see_what"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> Eric, I can see what you interpreted as a suspended ceiling. If you look again, you will see that the structure above is concrete and the ceiling below is a suspended ceiling where the pipe above are not in the dedicated space above the equipment. Here is another diagram. <A HREF="id45_tankless_water_heater_1122005.htm" TARGET="_top" TITLE="Let The Code Decide / Quik Talk (2002 NE"><U>See Tankless water heater 11/2/2005</U></A></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="19d92830.png" border=0 width="402" height="387" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <bR> <div> Look at this diagram and see the location of the duct work and the pipes. If the suspended ceiling was structured sheetrock, then anything above that ceiling would not be in the dedicated space. Can you hear me know?</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="disconnects_for_motors_4202006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Disconnects for motors 4/20/2006</B></div> <div> <B>is there a rule that says that a disconnect must be with in so many ft. of the motor ?</B></div> <bR> <div> Yes! They do require a disconnect means. They do require disconnect within sight. The maximum distance in sight is 50 feet.</div> <bR> <div> <B>Article 430 Motors</B></div> <div> I<B>X. Disconnecting Means</B></div> <div> <B>430.101 General.</B></div> <div> <I>Part IX is intended to require disconnecting means capable of disconnecting motors and controllers from the circuit.</I></div> <div> <B>430.102 Location</B>.</div> <div> <B>(A) Controller</B>. <I>An individual disconnecting means shall be provided for each controller and shall disconnect the controller. The disconnecting means shall be located in sight from the controller location.</I></div> <div> <B>(B) Motor.</B><I> A disconnecting means shall be located </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I><B>in sight from the motor</B></I></FONT><I> location and the driven machinery location. The disconnecting means required in accordance with 430.102(A) shall be permitted to serve as the disconnecting means for the motor if it is located in sight from the motor location and the driven machinery location.</I></div> <div> <B>In Sight From (Within Sight From, Within Sight).</B>  <I>Where this Code specifies that one equipment shall be “in sight from,” “within sight from,” or “within sight,” and so forth, of another equipment, the specified equipment is to be visible and not more than 15 m (</I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>50 ft</I></FONT><I>) distant from the other.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="gfci_s_on_swimming_pools_4142006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>GFCI's on swimming pools 4/14/2006</B></div> <div> <B>Hello Ed, </B></div> <div> <B>My question is whether a heat pump, used for heating an in ground swimming pool, requires a GFCI circuit breaker. The unit will be 17 feet from the edge of the heat pump to the edge of the pool wall, and will be wired to a dedicated 50A - 240V circuit. It will have a disconnect box within 1 foot of it, and that box will be 18 feet from the edge of the pool wall. Several of the heat pump manufacturers specify a GFCI circuit if the pump is within 16 feet of the pool wall. I have seen several reports that when GFCI's are used on compressor type equipment of this size that the compressor bleed when they are operating causes false trips. I have also seen the CPSC statement urging installation of GFCI protection on ALL swimming pool equipment, so my first question is: is it required for the above conditions, and secondly, even if the GFCI breaker is placed in the quick disconnect service box, will I still experience nuisance trips? </B></div> <div> <B>Thanks, </B></div> <div> <B>Tom  </B></div> <div> <B>Florida</B></div> <bR> <div> No, if it is not cord & plug! Ground-fault protection is for personal protection. Throughout the code, ground-fault protection is required on lights around pools and areas that are cord and plug around damp or wet locations. Most equipment that is hard wired is most likely not to create a ground-fault condition wither it is 120 volts or 240 volts. Some manufacture require that all of their pool equipment be GFCI protected. Cord and plug equipment 120/240 volts can be damaged, have worn cords, bad grounds or defective extension cords. </div> <bR> <div> <B>680.22 Area Lighting, Receptacles, and Equipment.</B></div> <div> <B>(A) Receptacles.</B></div> <div> <B>(5) GFCI Protection.</B><I> All 125-volt receptacles located within 6.0 m (20 ft) of the inside walls of a pool or fountain shall be protected by a ground-fault circuit interrupter. Receptacles that supply pool pump motors and that are rated 15 or 20 amperes, 120 volt through 240 volts, single phase, shall be provided with GFCI protection.</I></div> <div> <I>All single-phase, 15- and 20-ampere, 120 through 240 receptacles that supply swimming pool pump motors are required to have GFCI protection. While this requirement applied only to installations at other than dwellings in the 1999 Code, the 2002 Code had been revised to require GFCI protection of these receptacles for all swimming pool installations. It should be noted that this requirement applies to these receptacles regardless of their proximity to the swimming pool, and it applies only to cord-and-plug-connected pump motors.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="kitchen_code_question_4132006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Kitchen code question 4/13/2006</B></div> <div> <B>Hi Ed, </B></div> <div> <B>If I have a wall in the kitchen with windows coming down to the counter (i.e. there is no backsplash) how do I apply the code?  </B></div> <div> <B>Thanks, </B></div> <div> <B>Tracy </B></div> <bR> <div> You can't apply the code. The kitchen is emaculate. Wish it was mine, but looking at the picture you sent, your design left no place for any outlets to comply article 210.52. This code section was designed to have outlets to serve the countertop for appliances to operate. You have done yourself and any future owner a disserve if you need to plug something in.  </div> <bR> <div> I am surprised that the inspector approved the kitchen. There are several things you could have done to comply. Install an outlet on the left and right sidewall cabinets, or install surface mount receptacles called tombstones. They mount on top of the countertop and set at a 45 degree angle.</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <B> <A NAME="conduit_vs_cable_4122006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Conduit Vs cable 4/12/2006</B></div> <div> <B>A question was asked by our shop. Can we use Outdoor Cable instead of Conduit on The systems we build? We build industrial burner systems which are usually put together on a skid. They usually go outside and are typically in a harsh environment. The question was posed in an attempt to save time and money wiring the units. I can’t find a distinctive Yes or No in the National Electric Code Book. Typical wiring is 120VAC to Control Motors, Limit Switches, Pressure Switches, etc. So I guess my question is, Is it legal by the NEC to use multi conductor outdoor cable in place of running conduit? </B></div> <div> <B>Thanks,</B></div> <div> <B>Rob</B></div> <bR> <div> I guess the question will be based on a <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>harsh environment </B></FONT>. The NEC (NFPA 70) only covers damp, wet, dry and hazardous locations. If the industrial burner is not in a hazardous location, then the only condition is a damp or wet location since you are outside. I still have questions for you. Are the cables you wish to install subject to physical damage? Are the burners non-portable? Are the burners located in an area subject to vehicular traffic? If the answer is yes to any of my questions above, you can not use cables. If all questions are no, you need to go to chapter 3 wiring methods and find the suitable cables allowed. You can also go to article 400 for hard usage cables that can be disconnected.</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="minimum_size_ground_452006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Minimum size ground 4/5/2006</B></div> <div> <B>Dear Mr. Stubbs,</B></div> <div> <B>What's the minimum size Cu grounded conductor required for a 120/208 V, 3-phase , 4-wire service which consists of two parallel No. 1/0 THW Cu conductors per phase?</B></div> <bR> <div> 1/0.</div> <div>  Article 310.4 states that the phase, neutral and grounded conductor shall be a minimum of 1/0 if run in parallel.</div> <bR> <div> <B>310.4 Conductors in Parallel.</B></div> <div> <I>Aluminum, copper-clad aluminum, or copper conductors of size 1/0 AWG and larger, comprising each phase, neutral, or grounded circuit conductor, shall be permitted to be connected in parallel (electrically joined at both ends to form a single conductor).</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="house_in_china_452006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>House in China 4/5/2006</B></div> <div> <B>Dear Mr. Stubbs, </B></div> <div> <B>We have a house in China and need to update/change our exited electric system. I would like to learn a few general rules on electric so that I can understand the matter better when asking the electrician to perform the work. Below are questions that I would like to ask: </B></div> <div> <B>1. Does it require for the meter to be closest to the electric load center and why? What's the acceptable distant for meter’s location? If I would like to have the load center 25ft away from the meter, is it acceptable? </B></div> <div> <B>2. The power company only provides the 60amp/220v meter, so is it ok if I use the load center with 100amp/220v? </B></div> <div> <B>3. If the power company does not provide ground wire, can we still make ground wire by using the ground bar inside the load center? Can the ground bar inside the load center serve as the ground wire from the power company? If not, how do we make the ground wire to work giving the fact that the power company does not have it available for us to use? </B></div> <div> <B>Greatly appreciate your opinions on these.</B> </div> <bR> <div> This is a very interesting question and I am quite sure others will want to know the answer. I know the answer is very  late, but the amount of questions I receive are overwhelming.</div> <bR> <div> First and foremost, you are asking a question about China. I think we are both in agreement that they may have a local ordinance very different from the NEC. I will answer all questions based the 2005 NEC. Let's see what I can answer.</div> <bR> <div> 1. The meter enclosure <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>is not</B></FONT> required to be next to the loadcenter. The meter is the property of the local power company for monitoring the amount of power consumed by the customer. The location is for their access to read it. Most municipalities work together with the power company to locate the equipment in a convent place to meet both the power company and the local municipalities codes. The meter and the main can be together, but if the main is needed to be in a different location, it shall comply with article 230.70(A)(1)</div> <div> <B>VI. Service Equipment — Disconnecting Means</B></div> <div> <B>230.70 General.</B></div> <div> <I>Means shall be provided to disconnect all conductors in a building or other structure from the service-entrance conductors.</I></div> <div> <B>(A) Location.</B> <I>The service disconnecting means shall be installed in accordance with 230.70(A)(1), (2), and (3).</I></div> <div> <B>(1) Readily Accessible Location</B>.<I> The service disconnecting means shall be installed at a readily accessible location either outside of a building or structure or inside nearest the point of entrance of the service conductors.</I></div> <bR> <div> All conductor ahead of the main shall be in sight. If they are enclosed in the walls or ceiling and someone cuts or drills into that area with no way to turn the power off, could be hazardous to their health and to the property.</div> <bR> <div> 2. You can have the loadcenter as large as you want, but the main overcurrent device can not exceed 60 amps if that is all they supply. You don't want to burn up the meter and the conductors.</div> <bR> <div> 3. I'm not sure what you mean if the power company doesn't supply a ground wire. If this is a single phase service, and there are three conductors from the power company, then there is a ground. The system shall be grounded the same as article 250.66 and bonded according to article 250.92. If a ground wire is not supplied by the power company, my advice is to contact the power company and ask why and for you to leave it alone.  </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="19c89c50.png" border=0 width="393" height="453" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> Grounding and bonding is the most important part of the electrical system for life safety. Voltage is the most dangerous part of the electrical system, but for the safety of the equipment and your life, <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>you better</B></FONT> get the grounding right.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="_power_in_small_buildings_442006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B> Power in small buildings 4/4/2006</B></div> <div> <B>Ed, </B></div> <div> <B>First of all, let me congratulate you as I'm sure many have on a very informative site. Excellent work. </B></div> <div> <B>I have a couple of questions for you. </B></div> <div> <B>My first question relates to extending power to detached small buildings. Specifically, I will by building a play house for my children in the back yard this Spring. The structure will be about 8'x8', and I wanted to provide a simple overhead light and one duplex outlet inside the structure. </B></div> <div> <B>Unfortunately, I don't know the best way to get power out there. The playhouse will be located about 20ft from the corner of the house, and there is already a GFCI protected branch circuit located near that corner. Would you recommend laying Sced 80 PVC in the ground, or is there a way that I can run an overhead cable? I know 2002 NEC calls for #8 AWG copper minimum on overhead runs, but that seems overkill for a simple 15A branch circuit. </B></div> <div> <B>My second question is regarding box sizing. I am in the midst of remodeling my home to include master bedroom. I will be heating the space with radiant panels. The manufacturer of the panel provides a steel plate on the back of the panel, with the wires to the device protruding from the plate. The installer is expected to attach handy box extender to this plate, essentially making a box. The connections are the made in the resulting box and a handy box cover is installed and the panel installed on the finished ceiling. I have chosen to run the panels on a 20A circuit, using #12 NM-B cable. There are three panels on the circuit, on the load side of a thermostat. </B></div> <div> <B>In every catalog I have seen, handy box extenders only come in 13 CI volumes. My NEC 2002 book calls for a maximum of 5 #12 conductors in that size and configuration box. I have 2 #12 wires coming in to feed the panel, two #12 wires leaving to feed the next panel down the line, and 2 #14 wires coming from the radiant panel itself, plus tying the grounds together and bonding to the box. In my opinion, this exceeds the capacity of the box formed by the built-in plate on the radiant panel and handy box extension ring. In this situation would it be suitable to add a second extension ring to make up the required volume? Or, is there sufficient room in the box to make the connections and comply with code? </B></div> <div> <B>The installation instructions for the radiant panel can be fount at </B><A HREF="http://www.sshcinc.com/submitta.htm " TARGET="_top" TITLE="http://www.sshcinc.com/submitta.htm "><U><B><U>http://www.sshcinc.com/submitta.htm</U></B></U></A><A HREF="http://www.sshcinc.com/submitta.htm " TARGET="_top" TITLE="http://www.sshcinc.com/submitta.htm "><U><B><U> </U></B></U></A></div> <div> <B>Thank you very much for you opinions, </B></div> <div> <B>Regards, </B></div> <div> <B>Mark</B></div> <bR> <div> First, let's correct your conductor size of #8 awg copper. The minimum size overhead span is #10 copper or #8 aluminum up to 50 ft for individual conductors. You are only 20 ft. away. The advantage of underground schedule 40 is not having unsightly wires overhead and the possibility of tree branches falling on the lines. I understand your concern for the large conductor that are spanned overhead. There are two concerns that you must consider. The strain on smaller conductors and the larger ampacity allowed on overhead conductors because they are air cooled.</div> <bR> <div> <B>225.6 Conductor Size and Support.</B></div> <div> <B>(A) Overhead Spans.</B> <I>Open individual conductors shall not be smaller than the following:   </I></div> <div> <I>(1)</I><I>     For 600 volts, nominal, or less, 10 AWG copper or 8 AWG aluminum for spans up to 15 m (50 ft) in length and 8 AWG copper or 6 AWG aluminum for a longer span, unless supported by a messenger wire.</I></div> <bR> <div> You are correct on the box fill if you installed a metal box. Here are the choices: install non-metallic boxes and read the conductor amount inside of the box, or install a deeper single box, or install a two gang box with a single extension ring. Read articles below.</div> <div>  </div> <div> <B>314.16 Number of Conductors in Outlet, Device, and Junction Boxes, and Conduit Bodies.</B></div> <div> <I>Boxes and conduit bodies shall be of sufficient size to provide free space for all enclosed conductors. In no case shall the volume of the box, as calculated in 314.16(A), be less than the fill calculation as calculated in 314.16(B). The minimum volume for conduit bodies shall be as calculated in 314.16(C).</I></div> <div> <B>(A) Box Volume Calculations</B>. <I>The volume of a wiring enclosure (box) shall be the total volume of the assembled sections, and, </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>where used, the space provided by plaster rings, </I></FONT><I>domed covers, extension rings, and so forth, that are marked with their volume or are made from boxes the dimensions of which are listed in Table 314.16(A).</I></div> <div> <B>(2) Other Boxes.</B> <I>Boxes 1650 cm3 (100 in.3) or less, other than those described in Table 314.16(A), and </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>nonmetallic boxes shall be durably and legibly marked by the manufacturer with their volume.</I></FONT><I> Boxes described in Table 314.16(A) that have a volume larger than is designated in the table shall be permitted to have their volume marked as required by this section.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="tankless_water_heater_432006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Tankless water heater 4/3/2006</B></div> <div> <B>Your site is VERY informative and I spent three hours reading all the questions and answers until I fell asleep at my computer. I trust you to be an unbiased expert on this topic and need some help.</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>I had a master plumber install a Tankless water heater yesterday and it trips the breaker only when I run hot tap!!</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>Growing more and more discouraged and $400.00 later, I am now thinking I will return to a tanked water heater. It also seems I need to replace my dated panel,(20yrs+) as I was in ........store and was told in about two yrs. older panels will become much more obsolete. Since, I just bought this house, I am finding multiple problems, but your expertise is electrical and my questions are;</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>1) Do you think it may be best, to return to a tanked water heater, even though I am the only occupant? I do not want to have on going usage problems, (i.e..using the dishwasher, the washer and taking a shower, which could overload things depending on the connections even with a new increased load on my panel.) according to your quick talk writers.</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>2) My panel box inside does not have a main shut off breaker at the top and I can't get into the box outside as it has the wire security lock on it.(I am in Dallas, Texas) Fortunately, I have copper wiring throughout! From my reading on quick talk, I've learned increasing the ampacity on the panel does not necessarily correct the problem if things were wired for less. Any suggestions or advise would be greatly appreciated?</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>thx,</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>Rene' </B></div> <bR> <div> My guess is that your plumber may have connected the Tankless water heater to an existing circuit with other loads on it. First, find out what circuit is tripping and see if anything else goes off with that breaker off. Second, see if the breaker is on a 15 or 20 amp breaker. Third, have a licensed electrical contractor install a separate 20 amp branch circuit directly to the Tankless water heater if it isn't. Forth, avoid conversation with store staff that may not hold a  valid electrical licenses. By the way, even 20+ year old panels are safe, and copper will out last the house.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="baseboard_heaters_422006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Baseboard heaters 4/2/2006</B></div> <div> <B>hello I bought this house I live in 6 months ago and it as everyone around here dumb found.. about a month ago I've notice this black film allover everything. it has baseboard heater threw whole house old one on main floor new ones put in Attic bedrooms built right before I bought house... it also use to have old coal furnace years ago but it was disable in 1969 when the base boards was put in . than the plastered the vent up and took furnace all out .. the insurance company has had several people in hear and everyone is dumb found so they took lab test to a great lab that also takes care of police work and they were dumbfound..they couldn't figure out what this film is or where it could be coming from...can baseboard heaters do this by any chance? I did upstairs smell a weird smell coming from them a few months ago but thought it was because they where new. can you help</B></div> <bR> <div> Sounds to me like this is more of a legal question. Seems like the insurance company has hired experts to look into this matter. Who am I two second guess a site I have never seen. I would be <B>DUMB</B> if I <B>FOUND</B> and came to an uninvestigated conclusion. </div> <div> Sorry</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  <A NAME="200_or_400_amp_3282006_1"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <B>200 or 400 amp 3/28/2006</B></div> <div> <B>Hi, </B></div> <div> <B>I have a question that I have gotten several different answers on. I,m sure you can help. I am building a new house. I have a 200 amp service on the pole and want to know if 200 amps is enough. The house will be 3500 sf , single oven, cooktop, two heat/air units with heat pumps and all the other norms. Several electricians have said I need a bigger service while some say its fine. The next thing the power company offers is 400 amp. Please help. Thanks, Richard</B></div> <bR> <div> There is no way for me to give you an accurate answer to this question. I teach load calculation at Gwinnett Technical College and I must have nameplate loads to calculate a service size. Is the house all electric? You didn't say if the water heater or the dryer is electric. If this house is all electric and you plan to extend or install a pool, then two hundred amps could be on the border line. The power company will supply your demand. You don't have to have a 400 amp service. You could have a 250, 300, or 350 amp service. Someone may be trying to sell you a common practice service.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="plugmolding_3282006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Plugmolding 3/28/2006</B></div> <div> <B>Can you install plugmolding in a kitchen under the countertop front edge for your small appliances</B></div> <div> <B>Instead of in the backslash or under the upper cabinet that is not more than 20” from countertop</B></div> <bR> <div> Yes! Article 210.52(B)(5) allows receptacles not exceed 20 inches above the countertop. Allot of customers don't like to see receptacles in the backslash or on the wall for cosmetic reasons.</div> <bR> <div> <B> 210.52 Dwelling Unit Receptacle Outlets.</B></div> <div> <B>(C) Countertops.</B> <I>In kitchens and dining rooms of dwelling units, receptacle outlets for counter spaces shall be installed in accordance with 210.52(C)(1) through (5)</I>.</div> <div> <B>(5) Receptacle Outlet Location.</B> <I>Receptacle outlets shall be located above, but not more than 500 mm (20 in.) above, the countertop. Receptacle outlets rendered not readily accessible by appliances fastened in place, appliance garages, sinks, or rangetops as covered in 210.52(C)(1), Exception, or appliances occupying dedicated space shall not be considered as these required outlets.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="service_entrance_requirement_3252006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Service entrance requirement 3/25/2006</B></div> <div> <B>I have a camp property in Pennsylvania that is currently supplied by a 200 amp overhead service to a skid mounted storage shed. I am adding a cabin to this property and have buried a 3-1/2" pvc conduit between the shed and the cabin. The conduit ends on the outside of the shed near the meter enclosure. Can I install a 200 amp weatherproof circuit breaker service disconnect next to the meter enclosure, and then supply both buildings from this service disconnect as branch circuits? </B></div> <div> <B>Can I use USE -2 Aluminum 4/0-4/0-4/0-2/0 ground to supply the cabin thru the 3-1/2 pvc conduit. This cable is marked to be used for mobile home supply direct burial. </B></div> <bR> <div> I couldn't have said any better. Good luck.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="conduit_size_3232006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Conduit size 3/23/2006</B></div> <div> <B>Mr. Stubbs,</B></div> <div> <B>I was given several rolls of 3/8 flex conduit and planned to use it for running lights in a barn (for 3 conductor runs of #12 stranded @ 40 - 50 ft. long, dry location). I am not sure if this is acceptable. Can you please advise. Thanks, JL Erwin</B></div> <bR> <div> You cannot run 3/8 flex in that manor. The minimum trade size for <B>any empty raceway</B> is 1/2 inch. with exceptions.</div> <bR> <div> <B>ARTICLE 348 Flexible Metal Conduit: Type FMC</B></div> <div> <B>348.1 Scope.</B></div> <div> <I>This article covers the use, installation, and construction specifications for flexible metal conduit (FMC) and associated fittings.</I></div> <div> <I>348.2 Definition.</I></div> <div> <I>Flexible Metal Conduit (FMC). A raceway of circular cross section made of helically wound, formed, interlocked metal strip.</I></div> <div> <B>II. Installation</B></div> <div> <B>348.10 Uses Permitted.</B></div> <div> <I>FMC shall be permitted to be used in exposed and concealed locations.</I></div> <div> <B>348.12 Uses Not Permitted.</B></div> <div> <I>FMC shall not be used in the following:   </I></div> <div> <I>(1)     In wet locations unless the conductors are approved for the specific conditions and the installation is such that liquid is not likely to enter raceways or enclosures to which the conduit is connected</I></div> <div> <I>(2)     In hoistways, other than as permitted in 620.21(A)(1) </I></div> <div> <I>(3)     In storage battery rooms </I></div> <div> <I>(4)     In any hazardous (classified) location other than as permitted in 501.4(B) and 504.20 </I></div> <div> <I>(5)     Where exposed to materials having a deteriorating effect on the installed conductors, such as oil or gasoline </I></div> <div> <I>(6)     Underground or embedded in poured concrete or aggregate  </I></div> <div> <I>(7)     Where subject to physical damage</I></div> <div> <B>348.20 Size.</B></div> <div> <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>(A) Minimum. FMC less than metric designator 16 (trade size 1/2) shall not be used</B></FONT> <I>unless permitted in 348.20(A)(1) through (5) for metric designator 12 </I><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><I><B>(trade size 3/8)</B></I></FONT><I>.  </I></div> <div> <I>(1)     For enclosing the leads of motors as permitted in 430.145(B) </I></div> <div> <I>(2)    </I><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><I><B> In lengths not in excess of 1.8 m (6 ft) for any of the following uses:  </B></I></FONT></div> <div> <I><B>       a.     For utilization equipment </B></I></div> <div> <I><B>       b.     As part of a listed assembly </B></I></div> <div> <I><B>       c.     For tap connections to luminaires (lighting fixtures) as permitted in 410.67(C</B></I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="breaker_box_in_bedroom_3222006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Breaker box in bedroom 3/22/2006</B></div> <div> <B>Does the NYC electrical code prohibit circuit breaker box in bedrooms? </B></div> <div> <B>Beckman</B></div> <bR> <div> <B>NEW YORK CITY!!!!</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > Sorry, I don't live there and I think they have a different code.</FONT></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="query_3222006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Query 3/22/2006</B></div> <div> I<FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B>s it permissible to run a telephone line and 220 volt power leads together in a half inch conduit if the phone line is rated at 600 volts? </B></FONT></div> <div> <B>Thank you</B></div> <bR> <div> Yes, but not a good practice.</div> <bR> <div> I use to be a telephone repairman for Michigan Bell and one of our biggest complaints was radio, CB noises and humming on the phone lines. We had radio suppressors for the radios and CBs', but no luck on the humming. The humming comes from telephone cables running parallel with 120/240 volt circuits in the structure. The electrical cable conducts a 60 cycle AC voltage that creates an inductive field around it. Since telephone wires carry a DC current, it carries the alternating current to make sounds on both ends of the phone lines. The hum on the phone is the 60 cycles for the 120/240 volt line.</div> <div> If the lines are going to be fiber optic, you won't have that problem because of the high frequency used.</div> <div>   </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="100_amp_subpanel_3202006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>100 amp subpanel 3/20/2006</B></div> <div> <B>Hello, </B></div> <div> <B>I discovered your site on the Internet, and I have a couple of questions related to the same project I want to do. I want to install a 100 amp subpanel for a kitchen remodel. I have a 200 amp main panel which already has one 100 amp subpanel running from a 100 amp breaker to my detached garage. Can I add another 100 amp subpanel to do the kitchen remodel from its own 100 amp breaker? Also, I have been told conflicting stories as to what size wire to use for the new subpanel. One electrician told me to use #2 copper, and another told me to use #1 copper if I was using copper, but recommended aluminum instead. Which is correct? Also does it need to be in conduit from the main panel to the subpanel (it would be about 35 feet and is all inside the house)? Please help clear up my confusion. Thank you, </B></div> <div> <B>Tim</B></div> <bR> <div> You can add an additional panelboard downstream from your 100 amp subpanel if you have the proper listed lugs in the subpanel. The feeder conductors can be an SER cable. The distance won't be a problem. Unless you are going to have an all electric kitchen, a 60 amp breaker to a new panelboard should be able to handle the complete kitchen.</div> <div> <A HREF="#if_you_have_a_licensed_electrician" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U>(See let the code decide below)</U></A></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="washer_machines_3102006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Washer machines 3/10/2006</B></div> <div> <I><B>How many volt-ampere are there in washer machine use in laundry shop?</B></I></div> <bR> <div> You have to read the nameplate on the back of the washer machines.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="smoke_alarm_units_392006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B><B>Smoke alarm units 3/9/2006</B></div> <div> <B>The six smoke alarm units in my not large house are fed from the a/c line, have stand- in batteries and are connected to each other. I am fed up by units chirping without indicating which one does it. What if I disconnect them from the a/c supply and just leave the batteries to handle the load? Doing so would leave them sound alarms individually. Thanks</B></div> <bR> <div> The chirping is coming from the battery that needs to be changed. The purpose of the chirping is for you to check or replace the batteries. They were designed to annoy you to replace them. So, you just chirp on down to the store and get those 9 volt batteries.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="shop_in_my_house_362006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Shop in my house 3/6/2006</B></div> <div> <B>Ed, </B></div> <div> <B>I live in rural Texas and don't have any specific code requirements I still always try to do work by code, hence my question. </B></div> <div> <B>I have a shop at my house that has a 100 amp sub from a 200 amp main. I have a number of 240v tools, examples commercial MIG and TIG welders-require a 60 amp breaker; table saw, grinder-require a 15 amp breaker. My question is this, can you run more than one receptacle from a single breaker? An example would be how typical 120v receptacles are run in a house for normal appliances in parallel. I am the only one using the shop and would never be using more than one tool at a time. I had thought that for future possibilities of someone buying the house I would run separate runs of wire to the sub panel and use the sub as a junction box and wire nut the runs together. Do you see any issues with any of the above? Something tells me that its not to code to run any 240v receptacles in parallel weather they are 15 amp or 60 amp. Only one receptacle to one breaker. Your help would be appreciated. </B></div> <div> <B>Thanks, </B></div> <div> <B>Greg H</B></div> <bR> <div> You can't stop a drunk from driving a car if he fills ok about himself. So, If you sell the house to someone else, you can't make it idiot proof. Most dedicated circuits do not have multiple receptacles on them. Article 430.24 does allow combination circuits on one branch circuit, but the total demand shall not exceed the ampacity of the conduct. </div> <bR> <div> <B>430.24 Several Motors or a Motor(s) and Other Load(s).</B></div> <div> <I>Conductors supplying several motors, or a motor(s) and other load(s), shall have an ampacity not less than 125 percent of the full-load current rating of the highest rated motor plus the sum of the full-load current ratings of all the other motors in the group, as determined by 430.6(A), plus the ampacity required for the other loads.</I></div> <div> <I><B>Exception No. 1:</B></I><I> Where one or more of the motors of the group are used for short-time, intermittent, periodic, or varying duty, the ampere rating of such motors to be used in the summation shall be determined in accordance with 430.22(E). For the highest rated motor, the greater of either the ampere rating from 430.22(E) or the largest continuous duty motor full-load current multiplied by 1.25 shall be used in the summation.</I></div> <div> <I><B>Exception No. 2:</B></I><I> The ampacity of conductors supplying motor-operated fixed electric space-heating equipment shall conform with 424.3(B).</I></div> <div> <I><B>Exception No. 3:</B></I><I> Where the circuitry is interlocked so as to prevent operation of selected motors or other loads at the same time, the conductor ampacity shall be permitted to be based on the summation of the currents of the motors and other loads to be operated at the same time that results in the highest total current.</I></div> <bR> <div> I don't think anyone will change a good thing.</div> <div>   </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="replace_main_circuits_342006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Replace main circuits 3/4/2006</B></div> <div> <B>I have a question on the replacement and rewiring of a main circuit panel for a home. Electric utility service begins at the meter can then feeds this service panel in this case a new 125 amp GE box with a 125 amp main breaker This main box is connected to the meter can with a metal pipe connection. Green ground from the meter can box connects to the water pipe going into the home. </B></div> <div> <B>Question… Does a green ground wire get attached to the White / Neutral bar or just to metal panel itself? The green ground then is connected to the water house copper water pipe. </B></div> <div> <B>Thank you for your time</B></div> <div> <B>Jeffrey </B></div> <bR> <div> The grounding electrode conductor shall be bonded to the neutral bar. This is the same bar that the bare or insulated conductor from the local power is connected too.</div> <DIV ALIGN="LEFT"></DIV> <div> <IMG SRC="1687aae0.png" border=0 width="378" height="430" ALIGN="BOTTOM" HSPACE="0" VSPACE="0">Grounding electrode to water pipe</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="nec_110_9_322006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>NEC 110.9 interrupting rating 3/2/2006</B></div> <div> <B>Mr. Stubbs,</B></div> <div> <B>Will greatly appreciate your opinion on a situation as follows:</B></div> <bR> <div> <B>I have been engaged to design a new electric service for an existing</B></div> <div> <B>hospital. This will be a 480/277 service and will replace the present</B></div> <div> <B>service, so there will be only one service point. This, I think, will be</B></div> <div> <B>construed as a major electrical renovation.</B></div> <bR> <div> <B>My plan is simple enough - provide new service equipment in a stand alone</B></div> <div> <B>building ( the present boiler room location is too crowded, plus, I have to</B></div> <div> <B>leave all facilities connected to the old service equipment until the</B></div> <div> <B>contractor's base work is complete). At that point, we will energize the</B></div> <div> <B>new service and, point by point, disconnect the individual feeders from the</B></div> <div> <B>old equipment and splice them to new conductors from the new equipment</B></div> <bR> <div> <B>Here's where the project gets hazy. The building is some 30 years old and</B></div> <div> <B>there are no series interrupting rating on the panels. In light of the</B></div> <div> <B>major upgrade to the facility, will those old panels (which have no rating</B></div> <div> <B>acceptable to permit modern equipment listing requirements) have to be</B></div> <div> <B>changed because I'm feeding them from a new source (actually, the new source</B></div> <div> <B>will have lower available fault current than the original?</B></div> <bR> <div> <B>I can calculate the fault levels at each panel, but even if they are below</B></div> <div> <B>the ratings of the breakers in the panels, those panels are not currently</B></div> <div> <B>"listed". Will this be a satisfactory installation?</B></div> <div> <B>Thanks, Lou</B></div> <bR> <div> There are two thing you need to do first. Get an engineer to design the service and fault current calculation and check with the local jurisdiction for grand father rules. You are taking a big responsibility by taking on a hospital; and not knowing the fault currents on the service and feeders. </div> <bR> <div> If something goes wrong, <B>WHO'S FAULT IS IT?</B></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="motor_feeders_2282006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Motor feeders 2/28/2006</B></div> <div> <B>I am installing a 100 HP motor for a chiller cooling tower for a building. The nameplate rating for run load is 146 amps at 480v 3ph, </B></div> <div> <B>however I am installing a soft start for this application according to the plans that show a 300 amp breaker with 2/0 thhn feeding the soft start and then on to the motor. Is this correct? I am having a hard time finding where you may install a larger breaker on less rated amperage wire, thanks</B></div> <bR> <div> Well, I did a little calculations and the totals don't match your ratings. I'm lacking some information to do an accurate calculation. Service factor, temperature rating, power factor and efficiency.</div> <div> <B>Table 430.150  </B>100 HP = 124amps X 125% = 155 amps = 2/0 conductor.  The conductor size is correct.</div> <div> <B>Table 430.52  Inverse time breaker</B>  124 amps X 250% = 310 amps (next size short circuit-ground fault protection = 350 amps) 300 amps can be used if the breaker doesn't trip on start up.</div> <div> Their calculation---- 146 amps X 125% = 182.5 amps = 3/0 conductor. This makes the 2/0 two small</div> <div> <B>Table 430.52  Inverse time breaker  </B>146 amps X 250% = 365 amps (next size short circuit-ground fault protection = 400 amps)</div> <bR> <div> My advice is to follow the plans because the engineer has more information. Submit a notice to the engineer.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="different_voltges_2282006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Different Voltages 2/28/2006</B></div> <div> <B>Can 24 volts ac occupy the same conduit with 230 volts ac? Also what is</B></div> <div> <B>the difference between Class 1 , 2 and 3 wiring methods?</B></div> <bR> <div> <B>Dale </B></div> <div> <B>Technical Services Director</B></div> <div> <B> EMC</B></div> <bR> <div> Low voltage cables can occupy the same raceway as long as they the same or equivalent voltage rating stamped on the cables.</div> <div> <B>300.3 Conductors.</B></div> <div> <B>(C) Conductors of Different Systems.</B></div> <div> <B>(1) 600 Volts, Nominal, or Less.</B> <I>Conductors of circuits rated 600 volts, nominal, or less, ac circuits, </I><I>and dc circuits</I><I> shall be permitted to occupy the same equipment wiring enclosure, cable, or raceway. </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>All conductors shall have an insulation rating equal to at least the maximum circuit voltage applied to any conductor within the enclosure, cable, or raceway.</I></FONT></div> <bR> <div> The<B> </B>definitions below should be self explanatory. My comments well be the same.</div> <bR> <div> <B>725.1 Scope.</B></div> <div> <I>This article covers remote-control, signaling, and power-limited circuits that are not an integral part of a device or appliance.</I></div> <div> <B>725.2 Definitions</B>.</div> <div> <I>Class 1 Circuit.</I><I> The portion of the wiring system between the </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>load side of the overcurrent device or</I></FONT><I> power-limited supply and the connected equipment. The voltage and power limitations of the source are in accordance with 725.21.</I></div> <div> <I>Class 2 Circuit.</I><I> The portion of the wiring system between the </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>load side of a Class 2 power source and the connected equipment.</I></FONT><I> Due to its power limitations, a Class 2 circuit considers safety from a fire initiation standpoint and provides acceptable protection from electric shock.</I></div> <div> <I>Class 3 Circuit.</I><I> The portion of the wiring system between the </I><FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><I>load side of a Class 3 power source and the connected equipment</I></FONT><I>. Due to its power limitations, a Class 3 circuit considers safety from a fire initiation standpoint. Since higher levels of voltage and current than Class 2 are permitted, additional safeguards are specified to provide protection from an electric shock hazard that could be encountered.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="new_200_amp_panel_2282006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>New 200 amp panel 2/28/2006</B></div> <div> <B>please send illustrations/photos of a properly wired 200amp single phase residential electrical service. this is a new installation,and I live in NJ. if possible be specific from service entrance connections to panel. thank you</B></div> <bR> <div> If you need illustrations/photos of a properly wired service, then my guess is that you are not an electrical contractor and you want to wire the home yourself, or you have an electrical contractor and you want to be sure he or she will install it correctly. I hate to bust your bubble, but you need to go to a bookstore or electrical supply house and obtain this information. I'm sure there is someone local that can supply you the information you need.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="200_amp_panel_2272006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>200 amp panel 2/27/2006</B></div> <div> <B>I am going to be surface mounting a 200 amp murray (homeowner is a cheap skate) panel for a homeowner. </B></div> <div> <B>I am looking for the most secure(where it will not fall off the wall) way to mount this panel. </B></div> <div> <B>I plan(so far) is to drill two holes in the panel( one hole dead center-two to three inches from top) and another hole dead center( two to three inches from bottom).Then I am going to center the panel on the stud and drill through the holes I drilled in the panel right through to the stud. In the two holes(top right and top left) that the panel came with from the "factory" I am going use two "wing" anchors in the stucco on the house. Do you think this will be enough? </B></div> <div> <B>Thank you for your time</B></div> <bR> <div> Sounds to me like you have a plan. Good hanging.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="metal_helide_high_bay_2202006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Metal Helide High bay 2/20/2006</B></div> <div> <B>I have just installed four 400 watt metal halide lights in my shop and am confused on the ballast wiring. The lights came with four wiring possibilities: 120; 208; 240 and 277. I would like them to run more efficiently and think the 240 setting is right with a 20 amp double pole breaker. My question to you is the 208 setting only for 3 phase or can it also be for a two phase system? I live in Summerville, SC.</B></div> <div> <B>Thanks in advance…</B></div> <div> <B>Scott </B></div> <bR> <div> If you want the 400 watt Helide High Bay light to work correctly, then connect the wiring to the proper voltage coming in. Word to the wise, there are no 3 phase lights. These lights are designed for two wire connections. Either across two phases or one phase and one to ground (neutral). you just have to pick the right voltage coming in. I hope you installed it right before you received this answer.</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="let_the_code_decide_2162006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Let the code decide 2/16/2006</B></div> <div> <B>I want to feed a 100 Amp subpanel from a 100 Amp fuse</B></div> <div> <B>in my 200 Amp main service panel. Just to let you</B></div> <div> <B>know, I am having a licensed electrician make the</B></div> <div> <B>connections but to save money I am doing all the grunt</B></div> <div> <B>work (which I totally regret but now I'm committed and</B></div> <div> <B>determined).</B></div> <bR> <div> <B>My question pertains solely to feeding the 100 Amp sub</B></div> <div> <B>and the correct, per 2002 NEC, requirements.</B></div> <bR> <div> <B>Ideally, I would like to feed it (through a single</B></div> <div> <B>stud from the main right next to it in my attached</B></div> <div> <B>garage) with 2/3 copper NM-B (3 conductor plus ground,</B></div> <div> <B>2 AWG Romex) but from consulting various charts am</B></div> <div> <B>concerned that  would not be big enough due to</B></div> <div> <B>necessary derating because it is Romex.</B></div> <bR> <div> <B>My alternatives (as I see them now) are using 1/0 SER</B></div> <div> <B>but that would be aluminum which I rather not use, or</B></div> <div> <B>running 1 AWG THHN in 1 1/2" conduit but since I'm not</B></div> <div> <B>cutting a 1 1/2" hole in my 2x4 stud that would mean a</B></div> <div> <B>funky short run of conduit exposed in my garage which</B></div> <div> <B>I do not want.</B></div> <bR> <div> <B>Is 2/3 Romex up to 2002 code or do I need to go larger</B></div> <div> <B>(SER since there is no Romex larger than 2/3)?</B></div> <bR> <div> <B>Thanks in advance.</B></div> <div>  <A NAME="if_you_have_a_licensed_electrician"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> If you have a licensed electrician on the job, he can tell you that your 100 amp feed cannot be Romax (NM-B). Also, if your electrician has a code book, you can go to Table 310.15(B)(6) and see that if you install a <FONT SIZE="3" COLOR="#BF0000" FACE="Arial" ><B>100 amp breaker, you can reduce the aluminum conductor to #2 SER and the copper conductor to #4 SER.</B></FONT> Romax (NM-B) is 99% used as branch circuits. No a violation in Article 334.10 and 334.12 except as service conductors.</div> <bR> <div> <B>310.15 Ampacities for Conductors Rated 0–2000 Volts.</B></div> <div> <B>(B) Tables</B>. <I>Ampacities for conductors rated 0 to 2000 volts shall be as specified in the Allowable Ampacity Table 310.16 through Table 310.19 and Ampacity Table 310.20 through 310.23 as modified by (1) through (6)</I>.</div> <div>  <B>(6) 120/240-Volt, 3-Wire, Single-Phase Dwelling Services and Feeders.</B> <I>For dwelling units, conductors, as listed in Table 310.15(B)(6), shall be permitted as 120/240-volt, 3-wire, single-phase service-entrance conductors, service lateral conductors, and feeder conductors that serve as the main power feeder to a dwelling unit and are installed in raceway or cable with or without an equipment grounding conductor. For application of this section, the main power feeder shall be the feeder(s) between the main disconnect and the lighting and appliance branch-circuit panelboard(s). The feeder conductors to a dwelling unit shall not be required to be larger than their service-entrance conductors. The grounded conductor shall be permitted to be smaller than the ungrounded conductors, provided the requirements of 215.2, 220.22, and 230.42 are met.</I></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="running_multiple_cables_2132006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Running multiple cables 2/13/2006</B></div> <div> <B>I am adding a receptacle for a window mounted air conditioning unit. I want to run the 10-2 NM wire for this unit through the same holes in my wall studs as the 12-2 NM wire of a branch circuit. Is there any code violation to doing this?</B></div> <div> <B>Mark</B><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B> </B></FONT></div> <div> <B>Philadelphia, MS</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <bR> <div> No violation. You can fill a stud hole up to 60% without damage to the conductor.</div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="want_to_make_sure_282006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Want to make sure 2/8/2006</B></div> <div> <B>Hi Ed. Awesome website. A lot of great and helpful information. Mine may be a silly and/or simple one. I have an unfinished basement. I'm in the stage of setting up a home entertainment center down there but I realized I do not have an accessible receptacle for it. I can and most likely will run an extra receptacle by myself; not too difficult anyway. All I know is that I should use a GFCI outlet in unfinished basements. My dilemma is this; I'm not sure what type of circuit breaker I should use (15 or 20 amp) and what amp rating for the receptacle I should use (15 or 20 amp). Or, is 15 amp enough? Second, how high can I mount the receptacles in an unfinished basement? I noticed that the outlets for my sump and waste disposal are raised about 48 in. high above the floor. I would appreciate any response from you. Thanks in advance. </B></div> <div> <B>Bogart</B></div> <bR> <div> Hi, Bogart, thanks for the comment about my website. As you can see, getting to the questions is becoming overwhelming. I'm over 100 questions behind.</div> <bR> <div> First, there are no silly questions. The GFCI receptacle is required in the basement if it is unfinished and you can have it on a 15 amp or 20 amp circuit with the correct size conductor.</div> <div> Second question, there is no minimum height required for a wall receptacle. On a finished basement, the receptacle can be installed in the floor. The reason the sump pump outlet is 48 inches above the floor is possible a local ordinance, a homeowners request, an electricians preference or someone thinks you may get up to 48 inches of waste. By any chance, do you live in New Orleans?</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="arc_fault_circuits_232006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Arc fault circuits 2/3/2006</B></div> <div> <B>Mr. Stubbs </B></div> <div> <B>It is my understanding that an exterior GFI can not be fed from a kitchen or bathroom GFI circuit. Can an exterior GFI be fed from a bedroom ark fault circuit? </B></div> <div> <B>Thanks, </B></div> <div> <B>John</B></div> <bR> <div> Yes it can be fed from a bedroom circuit. There are a minimum of 4 circuits that are required to be on GFCI protection. Two small appliance circuits serving the countertops, one in the bathroom and the forth one is for all others. Article 220.4(B) states that the small appliance shall serve no other outlet and Article 210.52(B)(2) and a bathroom circuit under Article 210.52(D) shall serve no other outlet.</div> <bR> <div> There is no violation to feed off a bedroom circuit. Since all new bedroom circuits are required to be on Arc-fault, any circuit fed off an Arc-fault will be affected if there is a fault. The advantage of tapping off of a bedroom circuit is the short distance to an outside outlet.</div> <div>  </div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wiring_of_existing_homes_1302006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wiring of existing homes 1/30/2006</B> </div> <div> <B>I have a home that has been moved to a new location. It is wired with AWG 14 romex. It has a new service panel installed. My construction permit is listed as new construction. Some of the outlets have already been rewired using the AWG12. </B></div> <div> <B>The municipalities only requirement is the 2005 code criteria. </B></div> <div> <B>A.) Do I have to remove all existing wiring and replace with AWG 12 or can I use the 15 amp branch with the AWG 14 as long as I meet the maximum outlet requirements? </B></div> <div> <B>B.) Is there a way to get the inspection passed without tearing down all the interior drywall?</B></div> <bR> <div> I cannot give you a defendable answer. I have no clue if you have a local ordinance on existing wiring. The NEC is based on new installation. If you install any new wiring, you shall comply with the 2005 NEC. You need to call the local jurisdiction and ask. What do you have to loose?</div> <bR> <div> Send us your code question:<U> </U><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U> </U></A></FONT></div> <div> <IMG SRC="0834d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="pool_pump_gfci_protection_1212006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Pool Pump GFCI protection 1/21/2006</B> </div> <div> <B>Hello Ed. My question is: If a circulation pump for an underground swimming pool is connected with a wiring method other than cord and plug, does it require GFI protection? </B></div> <div> <B>Thanks, </B></div> <div> <B>Bill</B></div> <bR> <div> The answer is no. GFCI protection is required to protect a person from a shock hazard from equipment being plugged into a supply source. Equipment that is hard wired is less subject to having a ground fault being secured in the same place if a ground fault accrued, the overcurrent device should open the circuit because a grounding means is required. Cord and plug may introduce unforeseen hazards. </div> <bR> <div> <B>680.22 Area Lighting, Receptacles, and Equipment.</B> </div> <div> <B>(A) Receptacles</B>. </div> <div> <B>(1)</B> <I>Circulation and Sanitation System, Location. </I><FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><I>Receptacles that provide power</I></FONT><I> for water-pump motors or for other loads directly related to the circulation and sanitation system shall be located at least 3.0 m (10 ft) from the inside walls of the pool, or not less than 1.5 m (5 ft) from the inside walls of the pool if they meet all of the following conditions: </I></div> <div> <I>(1) Consist of single receptacles </I></div> <div> <I>(2) Employ a locking configuration </I></div> <div> <I>(3) Are of the grounding type </I></div> <div> <I>(4) Have GFCI protection</I></div> <div> <B>(5) GFCI Protection.</B><I> All 125-volt receptacles located within 6.0 m (20 ft) of the inside walls of a pool or fountain shall be protected by a ground-fault circuit interrupter. Receptacles that supply pool pump motors and that are rated 15 or 20 amperes, 120 volt through 240 volts, single phase, shall be provided with GFCI protection.</I></div> <bR> <div> Send us your code question: <FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U> </U></A></FONT></div> <div> <IMG SRC="0834d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="hvac_disconnect_1172006_"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>HVAC disconnect 1/17/2006</B> </div> <div> <B>I have a question that I THINK that I know the answer</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>to . I had a test question that said " What is the max.</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>distance allow from the HVAC condensing unit to the</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>disconnect ? "</B></div> <div> <B>A. 4 feet</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>B. 6 feet</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>C. 10 Feet</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>D. 12 feet</B></div> <div> <B>Well the code that was used was the 2002 NEC , 2003 IMC and the only thing that I could find was that the</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>2002 NEC said "within sight " ( or something close to that ) . I would say 12 feet (as long as it was in</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>sight <grin>) The test is over but I wanted to find out if I got the right answer . I like sparky to put mine no more than 6 feet away myself ( along with the required receptacle)</B></div> <div> <B>Thanks ,</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>Ross Kious</B></div> <bR> <div> None of the answers above are in the NEC. The maximum distance from the requirements of the NEC is 50 feet. Where did I get the 50 foot distance? Look in the definition in Article 100. </div> <bR> <div> <B>In Sight From (Within Sight From, Within Sight).</B> <I>Where this Code specifies that one equipment shall be “in sight from,” “within sight from,” or “within sight,” and so forth, of another equipment, the specified equipment is to </I><FONT SIZE="3" COLOR="#FF0000" FACE="Arial" ><I>be visible and not more than 15 m (50 ft) distant from the other.</I></FONT></div> <div> 440.14 Location. </div> <bR> <div> Disconnecting means shall be located within <FONT SIZE="3" COLOR="#FF0000" FACE="Arial" >sight from and readily accessible</FONT> from the air-conditioning or refrigerating equipment. The disconnecting means shall be permitted to be installed on or within the air-conditioning or refrigerating equipment. </div> <div> The disconnecting means shall not be located on panels that are designed to allow access to the air-conditioning or refrigeration equipment. </div> <div> <I>Exception No. 1: Where the disconnecting means provided in accordance with 430.102(A) is capable of being locked in the open position, and the refrigerating or air-conditioning equipment is essential to an industrial process in a facility where the conditions of maintenance and the supervision ensure that only qualified persons service the equipment, a disconnecting means within sight from the equipment shall not be required. </I></div> <div> Exception No. 1 accommodates special conditions associated with process refrigeration equipment. Typically, this equipment is very large, so rated disconnects may not be available. Additionally, this equipment may be in hazardous locations, and locating disconnecting means within sight of the motor may introduce additional hazards. </div> <div> <I>Exception No. 2: Where an attachment plug and receptacle serve as the disconnecting means in accordance with 440.13, their location shall be accessible but shall not be required to be readily accessible.</I> </div> <bR> <div> I believe your answer (D) is correct. If we can give 50, I think they can give 12.</div> <bR> <div> Send us your code question: <FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0834d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="smoke_detectors_interconnections"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Smoke Detectors Interconnections 1/10/2006</B> </div> <div> <B>Please help me understand Smoke Detector Interconnection. I understand the need for interconnection. Here is my question, each Smoke Alarm manufacture warns about compatibility's when interconnecting the units. They all wanted to interconnect their own Alarms yet they all use red, white, and black wiring and red being interconnection. Can they be interconnected between different manufactures? I am sure I am not the only one who come across this problem. My situation is that my house comes with interconnected smoke alarms and I would like to replace 2/3 of them with Smoke/CO units that are made by different vendor. I don't want to lose Interconnected capability and I don't necessary want to stay with my existing vendor when better units are available. Can this be done?</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>thank you,</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>Donny </B></div> <div> <B>Colorado Springs, CO</B></div> <bR> <div> Have no fear Donny, The interconnection between the smoke detectors is universal. The black conductor supplies the voltage to the smoke detector and the red wire sends a signal to the other smoke detectors to let them activate all the other smoke detectors. If you don't match up the colors right, the worse case is the other alarms may not send a signal to the other detectors.</div> <bR> <div> Send us your code question: <FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U> </U></A></FONT></div> <div> <IMG SRC="0834d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="nec_outdoors_172006_"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>NEC outdoors 1/7/2006</B> </div> <div> <B>Dear Mr. Stubbs,</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>Is the NEC also applicable for outdoor installations such as roadway lighting, parking lot lighting, etc. or is it only intended for indoor installations? Please advise.</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>Thanks,</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <B>Mohammed</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <bR> <div> Let me led you in the right direction. Please go to the front of your code book and you will be surprised at what you didn't take the time to read.</div> <div> <B>90.2 Scope.</B> </div> <div> <B>(A) Covered.</B> <I>This Code covers the installation of electric conductors, electric equipment, signaling and communications conductors and equipment, and fiber optic cables and raceways for the following: </I></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" ><I>(1) </I></FONT><I><U>Public</U></I><I> and private </I><I><U>premises</U></I><I>,</I><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><I> including buildings, structures, mobile homes, recreational vehicles, and floating buildings </I></FONT></div> <div> <I>(2) Yards, lots, parking lots, carnivals, and industrial substations </I></div> <div> <I>(3) Installations of conductors and equipment that connect to the supply of electricity</I> </div> <div> <I>Often, but not always, the source of supply of electricity is the serving electric utility. The point of connection from a premises wiring system to a serving electric utility system is, by definition, referred to as the service point. The conductors on the premises side of the service point are, by definition, referred to as service conductors. These definitions are found in Article 100. The requirements for service conductors as well as for service-related equipment are found in Article 230. Article 230 applies only where the source of supply of electricity is from a utility. </I></div> <div> <I>Where the source of supply of electricity is not the serving electric utility, the source may be a generator, a battery system, a solar photovoltaic system, a fuel cell, or a combination of those sources. Requirements for such sources of supply are found in Article 445, and in Articles 700 through 702 for generators, Article 480 for storage batteries, Article 690 for solar photovoltaic systems, and Article 692 for fuel cells. The associated delivery wiring requirements are found in Chapters 2 and 3 (except Article 230) and in Articles 700 through 702 for emergency, legally required, and optional standby power system circuits. </I></div> <div> <I>(4) Installations used by the electric utility, such as office buildings, warehouses, garages, machine shops, and recreational buildings, that are not an integral part of a generating plant, substation</I>, or control center</div> <div> <B>(B) Not Covered. This Code does not cover the following:</B> </div> <div> <I>(1) Installations in ships, watercraft other than floating buildings, railway rolling stock, aircraft, or automotive vehicles other than mobile homes and recreational vehicles </I></div> <div> <I>Installation requirements for floating buildings are found in Article 553. </I></div> <div> <I>(2) Installations under ground in mines and self-propelled mobile surface mining machinery and its attendant electrical trailing cable </I></div> <div> <I>(3) Installations of railways for generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock or installations used exclusively for signaling and communications purposes </I></div> <div> <I>(4) Installations of communications equipment under the exclusive control of communications utilities located outdoors or in building spaces used exclusively for such installations </I></div> <div> <I>(5) Installations under the exclusive control of an electric utility where such installations </I></div> <div> <I>a. Consist of service drops or service laterals, and associated metering, or </I></div> <div> <I>b. Are located in legally established easements, rights-of-way, or by other agreements either designated by or recognized by public service commissions, utility commissions, or other regulatory agencies having jurisdiction for such installations, or </I></div> <div> <I>c. Are on property owned or leased by the electric utility for the purpose of communications, metering, generation, control, transformation, transmission, or distribution of electric energy.</I></div> <bR> <div> Send us your code question: <FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U> </U></A></FONT></div> <div> <IMG SRC="0834d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="switch_leg_172006_"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Switch leg 1/7/2006</B> </div> <div> <B>With 40 years electrical experience never expected to find the most unusual problem under my nose right in my own home - Decided to add parallel light several feet away from existing ceiling light controlled by 3-way switch... Upon deciphering the wiring I realized that the contractor that originally wired my 28 year old home, used the neutral for switching rather than the hot leg???? Looks like an easy correction by switching the hot & neutral at the ceiling box - probably what the electrician did inadvertently while rushing during the original installation?? Should I leave well enough alone or switch it so the switch leg is on the hot rather than neutral? Does it matter? </B></div> <div> <B>Thanks, </B></div> <div> <B>ILT</B></div> <bR> <div> Whether you switch the neutral or the hot (Phase conductor), the light will still go off. I know back in the 60's when I first installed or repaired electrical circuits, the neutral use to be fused. That was a serious problem for the electrician and equipment going from 120 volts to 240 volts. I have been a victim of a back fed touching a neutral conductor while working on a dead circuit. </div> <div> The solution is to connect the black and white conductor from the existing light termination to the black and white of the new light fixture. It will function the same as the first light. </div> <bR> <div> Send us your code question: <FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U>Back to top</U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <div> <IMG SRC="0834d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="uf_wire_installed_152006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>UF wire installed 1/5/2006</B> </div> <div> <B>Question? Can type UF wire be installed in underground raceways such as rigid conduit, rigid non metallic conduit(PVC) etc.?</B></div> <bR> <div> Yes it can! The only reason that would make since to install it in a raceway is to protection it from physical damage or uses not permitted in Article 340.12.</div> <div> <B>340.1 Scope.</B> </div> <div> <I>This article covers the use, installation, and construction specifications for underground feeder and branch-circuit cable, Type UF. </I></div> <div> <B>340.12 Uses Not Permitted.</B> </div> <div> <I>Type UF cable shall not be used as follows: </I></div> <div> <I>(1) As service-entrance cable </I></div> <div> <I>(2) In commercial garages </I></div> <div> <I>(3) In theaters and similar locations </I></div> <div> <I>(4) In motion picture studios </I></div> <div> <I>(5) In storage battery rooms </I></div> <div> <I>(6) In hoistways, or on elevators or escalators </I></div> <div> <I>(7) In hazardous (classified) locations </I></div> <div> <I>(8) Embedded in poured cement, concrete, or aggregate, except where embedded in plaster as nonheating leads where permitted in 424.43 </I></div> <div> <I>(9) Where exposed to direct rays of the sun, unless identified as sunlight resistant</I></div> <bR> <div> Send us your code question: <FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></FONT></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0834d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <B> <A NAME="wire_under_staple_142006"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B></div> <div> <B>Wire under staple 1/4/2006</B> </div> <div> <B>How many 12/3 cables can be run parallel on a 2x4 stud under one wire </B></div> <div> <B>staple?</B></div> <bR> <div> That depends on the staple size and the manufactures specification requirements. Staples come in many sizes to allow for large a single cable or multiple combinations of smaller cables. The NEC addresses securing, supporting and subject to physical damage. </div> <div> <B>334.30 Securing and Supporting</B>. </div> <div> <I>Nonmetallic-sheathed cable shall be secured by staples, cable ties, straps, hangers, or similar fittings designed and installed so as not to damage the cable at intervals not exceeding 1.4 m (41/2 ft) and within 300 mm (12 in.) of every cabinet, box, or fitting. Flat cables shall not be stapled on edge.</I> </div> <div> The general requirement of 334.30 requires that the cable be secured. Simply draping the cable over air ducts, timbers, joists, pipes, and ceiling grid members is not permitted, except where fished as allowed in 334.30(B)(1). </div> <bR> <div> <B>300.4 Protection Against Physical Damage.</B> </div> <div> <I>Where subject to physical damage, conductors shall be adequately protected. </I></div> <div> <B>(D) Cables and Raceways Parallel to Framing Members</B>. <I>In both exposed and concealed locations, where a cable- or raceway-type wiring method is installed parallel to framing members, such as joists, rafters, or studs, the cable or raceway shall be installed and supported so that the nearest outside surface of the cable or raceway is not less than 32 mm (11/4 in.) from the nearest edge of the framing member where nails or screws are likely to penetrate. Where this distance cannot be maintained, the cable or raceway shall be protected from penetration by nails or screws by a steel plate, sleeve, or equivalent at least 1.6 mm (1/16 in.) thick.</I></div> <div> If you are having a problem with your Electrical Inspector, be sure you show him or her the code section and the box the staples came in. Read the specifications that came from the manufacture.</div> <bR> <bR> <div>  <A NAME="send_us_your_code_questio"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Arial" >Send us your code question:</FONT><U> </U><A HREF="mailto:edstubbs1@comcast.net" TARGET="_top" TITLE="mailto:edstubbs1@comcast.net"><U><U>Mailto:edstubbs1@comcast.net</U></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="id22_m.htm" TITLE="Let The Code Decide / Quik Talk (2005 NE"><U><U>Back to top</U></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><U> </U></FONT></div> <div> <IMG SRC="0824d0c0.png" border=0 width="589" height="12" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <bR> <bR> <bR> <div> <B>"The State of Georgia is </B><FONT SIZE="5" COLOR="#FF0000" FACE="Times New" ><B><U>NOW</U></B></FONT><B> on the 2008 NEC"</B><FONT SIZE="1" COLOR="#0000FF" FACE="Times New" ><B> </B></FONT></div> <div> <B>Go to: </B><FONT SIZE="3" COLOR="#0000FF" FACE="Times New" ><U>City and County</U></FONT> <B>for local amendments</B><FONT SIZE="3" COLOR="#000000" FACE="Arial" > </FONT></div> <bR> <bR> <bR> <bR> <bR> <bR> <bR> <bR> <bR> <bR> <bR> <bR> </td> </tr></table></body>