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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 ! @' j7 `' m! u; Z8 p! M
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Common mistake Question:) \9 F1 ?, ?! M3 ^5 B
/ @/ {# ]- j' i/ s- X( b1 RWhat 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 y m ~9 e+ c! |9 p0 q3 W7 X
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Please read Choices:
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发表于 2010-5-22 05:23
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