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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 1 M" x: L7 b k1 \
7 K4 d! p. P+ H- u" M. a. {Common mistake Question:, A9 e- E; V$ Y8 @1 }# z' ?" \
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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.( c, o$ }$ u( A4 e6 q2 j
+ t5 }1 r) W! ^6 j: g8 ^Please read Choices:
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狗仔卡
发表于 2010-5-22 05:23
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