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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 : ~* |& `) P( E4 t4 i" T+ c( t
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Common mistake Question:, G2 Z% j# P& o8 t3 W0 R( D
0 T* l* D6 a `8 oWhat 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.4 g+ P/ c) O' C; h
# a' B9 i3 O8 j& J0 R5 G7 f9 mPlease read Choices:! v# B {' h; R, q
* Z! P3 r" e2 f7 xhttp://www.ceac.ca/bbs/forum-10-1.html |
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发表于 2010-5-22 05:23
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