本帖最后由 移民电工 于 2010-5-22 07:20 编辑 6 \. ]! b: N" Y
( U9 G7 {; F% c
Common mistake Question: ; {& p$ R+ o' R7 T+ o; _" h- ]# h* U
What would you do? Lets say you are adding a circuit into a sub-panel, and you see no ground bar. The grounds and neutrals of about twenty 12-2s go to the neutral bars and the box remains ungrounded. Your sub-feed is four wire(A,B,N,G) and the last forgetful sparky left that bar that can bond the box to the neutral bar. please vote. 2 t% |8 \6 O5 t+ O( P9 y4 y5 G% S7 d- {% H. U$ J9 ~. T0 h
Please read Choices:6 H; Y2 f( d4 | }0 a: J
狗仔卡
鲜花(
鸡蛋(
发表于 2010-5-22 05:23
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡
楼主
