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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 2 e- H+ N+ _/ L. M/ t
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Common mistake Question:% U% o- Q8 r2 F: W' R0 T
, {$ ?8 s/ Z& J# b! t+ Y( C0 Q/ J3 _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.
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# ~# g9 \/ ` p' \2 HPlease read Choices:& U7 S1 O9 m* o& S1 b* h5 S
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发表于 2010-5-22 05:23
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