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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 / W' K/ a: _- C( r
! i- g, h/ ~" w: _Common mistake Question:
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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.( @0 H* o4 }8 Q
* u/ y# ^. G6 c1 zPlease read Choices:/ B# O% F* W$ M. c! ^
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发表于 2010-5-22 05:23
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