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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 5 \6 H# n! e4 `& c q! ]
' F, |8 t- j$ U) S' B; J) C. {Common mistake Question:6 `' Q2 J- R" y4 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.- Y& K# g/ r7 D
* M" c9 g0 y& ?- w! FPlease read Choices:. C" {. Z5 e$ j) r4 [+ K
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发表于 2010-5-22 05:23
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