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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 , N' K# }0 R6 ?1 w: ~
' ?- @6 X, A0 s! c# ?+ vCommon mistake Question:1 ?! Y' {3 B. x: D
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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.+ s- }% F3 X; }
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Please read Choices:6 r3 r5 S& u. u' h7 s3 ^% w9 d
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