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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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Common mistake Question:5 L% ]5 Y7 v$ k+ k% s8 G% d
$ ]5 W9 _% C/ ]2 ?! c& v2 w& EWhat 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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Please read Choices:! l/ k% |* z2 _9 ] H, n9 @
( W# b$ p2 x6 K/ K, [3 ]" F6 b0 {http://www.ceac.ca/bbs/forum-10-1.html |
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发表于 2010-5-22 05:23
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