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三根电线颜色怎么区分
更新时间： 2020-10-30 11:57:42  

三根电线分别是火线、零线、地线。1、根据颜色区分：火线一般颜色为红色、黄色、绿色，零线颜色一般为黑色、蓝色，地线一般是黄绿相间的双色线。2、根据位置：一般左边是零线，右边是火线，中间是地线。左零，右火，中间地线。

关键词： 电线 颜色 怎么 区分

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