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本帖最后由 移民电工 于 2010-5-22 07:20 编辑
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& P8 F; W: o4 I9 hCommon mistake Question:4 H9 i8 ?% x+ _' Z4 U, L4 y# |
+ x0 X% z4 Q8 B+ P" D8 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.
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1 A, o/ p p2 ? \Please read Choices:, G0 c1 P. }3 c
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