本帖最后由 移民电工 于 2010-5-22 07:20 编辑 . E9 }: v$ R* y) C7 i3 i) O* ?; `3 U
Common mistake Question: : |( `: \# E; j& c5 P; ?, ]8 o: n' b
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. ) l& w$ j; N' L& U+ l; D9 p/ U9 w6 W j8 r% Y1 p1 R* K( M
Please read Choices: + R! I+ t0 |( Z5 S/ V3 M $ A0 e& S! p) w+ _1 S- vhttp://www.ceac.ca/bbs/forum-10-1.html