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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 % b+ c& S3 I/ u* S
& B# \" U9 e# J8 r3 CCommon mistake Question:
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$ F& Y* e# ~1 {2 d% e" X7 d5 |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." m3 \7 s: Y8 i
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Please read Choices:- g0 y- Y0 L/ h. q% H
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发表于 2010-5-22 05:23
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