本帖最后由 移民电工 于 2010-5-22 07:20 编辑 8 s5 @4 P* e r' B4 K; l0 T9 N- J" G( \8 X+ S
Common mistake Question: / m0 l# Z% V3 m! }$ n% Z6 K - q1 K* F: y7 d8 z* v! H; dWhat 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. & m* i9 i2 R4 `- U2 }# u4 R" m \. Q% o) l
Please read Choices:$ H6 q7 L" ]3 ~% d/ M" a
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发表于 2010-5-22 05:23
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