measure the voltage between the wire and earth ground (in theory), so if the neutral is off ground, it will explain what you are seeing.
measure the voltage between the wire and earth ground (in theory
回答: meter measures the voltage between hot and neutral wires; the 电笔
由 foolishnhungry
于 2016-02-06 18:36:03
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谢谢, 那是否意味以前的电工搞错了?还是有特殊理由?
-余生渐入佳境-
♂
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02/06/2016 postreply
19:07:07