想不通的開關接法問題 - 居家修繕
By Charlotte
at 2015-03-12T01:44
at 2015-03-12T01:44
Table of Contents
畫的簡圖如下
https://www.dropbox.com/s/e947b63ip9xok41/3.jpg?dl=0
我的畫法是面對該開關(兩個),假裝能透視看到後面這樣畫
問題如裡頭的紅字...
照理說我那樣接應該沒問題~
可是為什麼我需像我圖畫的那樣接才都會有作用?
想破頭了...
另外~
我要怎麼用電表...判斷一條線是中性線還是燈切線呢?
都沒電壓....和火線一起測電壓也都是110V...
謝謝~~
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居家修繕
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