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" colspan=2 height=90 BGCOLOR="#006699" TEXT="#080000" bgproperties="fixed" background="02c285a1erlcgo.png"> <div> <FONT SIZE="5" COLOR="#FFCC66" FACE="Arial" ><B>EDSTUBBS.COM                    Electrical Contractors Web Site</B></FONT><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>   |   <B>Let The Code Decide / Quik Talk (2005 NEC)</B>   |   <A HREF="id45.htm" TARGET="_top" 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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> <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> <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> <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="#000000" 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="#000000" 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="#000000" 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="#000000" 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="#000000" 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="#000000" 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="#000000" 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="#000000" FACE="Arial" ><U> </U></FONT></div> <DIV ALIGN="LEFT"></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> <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="#000000" 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="#000000" 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="#000000" 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" height=390 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 Talk. </B></FONT><FONT SIZE="3" COLOR="#0000FF" FACE="Arial" ><B>Do to your overwhelming questions sent to me, it may take 4 to 12 weeks for me to give you my answer. Some questions may not be answered because e-mails don't give state 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 </B><B>STILL</B><B> on the 2005 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="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> <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 chapt/vers 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>Recept 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 i