本帖最后由 移民电工 于 2010-5-22 07:20 编辑 " C9 M- x' S I1 l7 z! G L' [! \5 Y {* R0 H8 E9 y
Common mistake Question:% E \- [: r8 ]" Q
- v5 i8 W" B# b$ z/ I Y# TWhat 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.1 D8 b5 M# T4 A7 }
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Please read Choices:8 t* M# U8 v; H0 g* a
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发表于 2010-5-22 05:23
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