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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 8 `+ B$ e6 Q6 q& h' P1 M5 Z* \6 ~
3 T! M2 E1 j* l6 O4 j0 pCommon mistake Question:6 j+ e* l# P H4 Z$ N7 O" @; x
2 [8 x$ i+ _0 Q I* HWhat 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 B) ~0 d5 s% {, ^1 F) I0 w
, G0 h. Y6 b4 m$ I, M& C$ xPlease read Choices:
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发表于 2010-5-22 05:23
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