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三联双控需要放几根线
更新时间: 2020-09-24 00:00:00  

正常情况下,一个三联双控开关需要放7根线。

具体原理如下:1、一个单控开关用2根线:其中1根是电源火线,另一根是连接电灯的线;

2、一个双控开关要控制2个对象,要增加1根线,所以要放3根线;

3、3联的双控开关可以共用1根火线,其中一个开关直接连接火线,另外2个开关用短跳线与火线连接,所以一共要放7根线。

关键词: 需要

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