墙上插座和天花板处的电线一般是互相独立的,如果插座电源跳闸没电了,但灯还会亮。有时同一面墙如有二个插座,会用独立的电线供电,那整个房子就会黑了东边有西边,南方不亮北方亮。
墙上插座和天花板处的电线一般是互相独立的,如果插座电源跳闸没电了,但灯还会亮。有时同一面墙如有二个插座,会用独立的电线供电,那整个房子就会黑了东边有西边,南方不亮北方亮。
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