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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 ( H( p$ w, h7 N7 L: s( q: t
; J4 \ x2 r3 }7 a; CCommon mistake Question:! s- Z' S5 V; m, a% w
P; p' r/ l2 R' t# F4 x" HWhat 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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) Y9 E+ t. x3 t. I8 k! H4 F) zPlease read Choices:
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* _8 m0 u$ e1 E6 H( ?, m% y% Ihttp://www.ceac.ca/bbs/forum-10-1.html |
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发表于 2010-5-22 05:23
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