Common mistake Question,现场图片一览

移民电工 · 发表于 2010-5-22 05:23

本帖最后由移民电工于 2010-5-22 07:20 编辑

Common mistake Question:

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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移民电工 · 发表于 2010-5-22 06:20

现场图片一览

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移民电工 · 发表于 2010-5-22 06:20

现场图片一览

加拿大华人电工论坛
http://www.ceac.ca/bbs/forum-10-1.html

移民电工 · 发表于 2010-5-22 06:21

现场图片一览

加拿大华人电工论坛
http://www.ceac.ca/bbs/forum-10-1.html

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