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請問老插座的火線怎麼判斷？
Aug 22nd 2014, 14:46

房裡的插座鎖頭崩了，小弟想說以前也有自己換過幾個插座，但一拆開

一整個看不懂...

中間的紅線我知道是老插座的分接線(以前問水電工)

可是插座不是火線(紅)、水線(白)、地線(綠)，且2~3條而已？

我房間中的卻是白、黑、黑、藍四條線

請問我要如何判斷哪條是火線、哪條是水線、還有哪幾條不用接？

感謝大家。

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