本帖最后由 移民电工 于 2010-5-22 07:20 编辑 9 G' k1 M S3 x' }7 e
- H. y( O9 e# E' I5 a/ I* K: zCommon mistake Question: / w4 Y1 D- X2 D) W' R; o# r ! }2 o- K+ v* K' }+ j/ aWhat 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. 7 `0 G" `8 j& y2 T2 X3 q* e7 S3 u, w 1 p+ B( e3 _& zPlease read Choices:- t( h2 I# `# d
8 z2 i( V) u) @' s$ L. X+ ~/ c http://www.ceac.ca/bbs/forum-10-1.html