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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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, d/ E$ Q. G/ dCommon mistake Question:8 s) t2 g' e) V- g, K
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What 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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Please read Choices:) h) \& a3 b3 ^, W) o0 G) r0 r
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