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灯开关接火线还是零线_家居日记
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灯开关接火线还是零线

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灯开关接火线还是零线 应该和火线相接，因为火线和地面之间的电压为220伏，再将电源零线与灯的零线进行并联，这样出现断电时灯就可以自行熄灭，不会对人体造成伤害。如


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