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120kw用多大电缆和空开 – 家居日记

120kw用多大电缆和空开

120kw用多大电缆和空开
70平方铜芯电线,300安空开120kw选择70平方的铜芯电线。根据功率电流计算得出,I=P/(1.732×U×cosφ)=214A