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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 , N) Y, Y; l6 f" t0 I" w
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Common mistake Question:2 x: R0 [- F) ]3 J8 g3 y
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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.3 S0 f: F7 N0 |! j) `+ [
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Please read Choices: q4 N: C6 L7 H B) x" o+ X
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发表于 2010-5-22 05:23
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