本帖最后由 移民电工 于 2010-5-22 07:20 编辑 . V6 c" Z* m; h$ v . V' ]; `" S; w% F( vCommon mistake Question: 5 D! N. e6 @( i1 J+ ]$ s# e9 P9 [# {4 I
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. 3 u; f) ~7 V: }7 y' m! i5 E" x8 M3 S7 c4 m2 G/ F9 v
Please read Choices:1 ~& i: f- i) z' F7 H
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发表于 2010-5-22 05:23
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