本帖最后由 移民电工 于 2010-5-22 07:20 编辑 ( y5 ?6 J% Q) [1 s! B& q9 B! D! C) R/ f( y3 n
Common mistake Question:/ o* X9 h" L* S/ l
, a Q9 v# X2 i8 p/ o& UWhat 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.( a l! G% A5 }# L