三角插头中,"L","N","E"分别接什么线?

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三角插头中,"L","N","E"分别接什么线?
三角插头中,"L","N","E"分别接什么线?

三角插头中,"L","N","E"分别接什么线?
火线-L
live line
零线-N
null line
接零线-E
这是地线吧,earth line.