本帖最后由 移民电工 于 2010-5-22 07:20 编辑 ! X1 ^( i. K1 U( T
/ H" ?: N P2 w: }: A9 v2 V! M7 CCommon mistake Question:( ~ O' T% y( w p# {9 e- b
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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. & p8 I# @7 }. f& D+ t+ @+ _ % \) g# v$ r& ^4 sPlease read Choices:6 B" y. c* o3 r1 r- U. P) |
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发表于 2010-5-22 05:23
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