本帖最后由 移民电工 于 2010-5-22 07:20 编辑 7 Z) F1 U1 G5 ^$ G$ K
) J0 @% ~: H( _Common mistake Question:1 {6 y9 b5 K+ }" C6 q
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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./ V g' B6 V% P \5 H( {
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发表于 2010-5-22 05:23
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