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4根220V电热管接380V怎么接

2025-03-15 22:59:10

推荐回答（1个）

回答1：

不能接；因为电流=电压÷电阻，380÷220=1.73=根号3，因为你只改变了电压，发热管未变=电阻未变，所以当电压由220V变为380V后，电压升高了根号3倍，电流也就升高了根号3倍。
但220V的电热管接到380V后电热管很快被烧毁的。不要去试。

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