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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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$ Y/ h" X, j# q; ICommon mistake Question:
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3 ~+ t3 t6 x3 h: T- W7 S2 p2 U2 gWhat 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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+ l. C/ f+ u0 {7 ^0 B1 N NPlease read Choices:
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" a& O6 U( m/ G$ Q: Z0 l5 zhttp://www.ceac.ca/bbs/forum-10-1.html |
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发表于 2010-5-22 05:23
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