本帖最后由 移民电工 于 2010-5-22 07:20 编辑 # k& T. `9 g* C9 l2 W - C% u. f2 |& Z1 p# w7 lCommon mistake Question:7 {9 X& o1 {9 Y
: e* N7 R4 v( I+ T/ ZWhat 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 e0 Q7 e R- a+ ?2 V. C* g