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两个断路器用两条火线，一条零线，可以吗

2025-04-05 13:05:23

推荐回答（1个）

回答（1）：

如果两条火线属于同一相线的话，可以。但你要选择足够粗的零线，因为两条火线的电流会同时通过零线，一般来说每平方铜线能通4A电流，4平方就能通16A。
如果两条火线属于不同的相线，不可以。假设你在零线开路（断开），电流就会从第一条火线通过两个负载走到第二条火线，两条火线之间的电压为原电压的1.17倍。

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