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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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( l( h% N6 H/ ?Common mistake Question:
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" x" ?! z T+ ^& Q6 E/ N3 N- _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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& B' Y( o, ~# b6 i6 PPlease read Choices:4 a/ ^ s5 _4 f0 P2 ?8 n
5 @! B3 ~8 P1 {' [8 N r+ _& Nhttp://www.ceac.ca/bbs/forum-10-1.html |
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发表于 2010-5-22 05:23
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