本帖最后由 移民电工 于 2010-5-22 07:20 编辑 % h+ R; S( ^$ W7 y# B d 2 _3 V( m: {: c0 hCommon mistake Question: # N# r' }; G0 Y) T3 h" U 9 Q% I' s3 R) V/ E9 c; }$ IWhat 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.4 v4 Q" C$ W9 M% @; s/ J
C2 D8 D. w& s1 F% v/ YPlease read Choices:) x& x# I: S+ P' U2 Q) u( v