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本帖最后由 移民电工 于 2010-5-22 07:20 编辑 9 w4 k9 `& {- Q/ l$ R9 O
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Common mistake Question:6 Y$ w. o; D+ ^( [; ^$ f
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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.- b$ ?7 o6 @7 l9 D$ I0 k
, J, ]. j! q1 c& G+ KPlease read Choices:4 \0 K* R) s% L) k$ ^- I/ q
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发表于 2010-5-22 05:23
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