本帖最后由 移民电工 于 2010-5-22 07:20 编辑 9 H7 T9 `6 _) W* n' _ ]
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Common mistake Question: 5 d( d F u4 [% l; `: U# V" C" K. a
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. % x) S0 F- Q& M* X7 M8 i+ w/ l9 E& l8 b5 `
Please read Choices:' y4 d2 k9 D8 u! R7 a4 i
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发表于 2010-5-22 05:23
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