本帖最后由 移民电工 于 2010-5-22 07:20 编辑 ' ]; j" a$ [' S1 m9 j% `: Z& q( j3 o( S$ A5 a! B
Common mistake Question:4 e. i4 H$ S. l) m8 Z
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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. ! L' D2 O5 f0 I: S& y1 g, ]5 l1 j8 d; w+ m. Y* n% a2 j' O8 ?
Please read Choices:& K8 e! W) l: ~8 T4 M* u
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发表于 2010-5-22 05:23
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