家中两相电 发现零线电压为36V 这是怎么回事? 另外发现闸盒处火线温度比零线高很多(有烧灼痕迹),怎么

我们家用电最大功率在3000-4000W左右
2025-04-08 05:30:24
推荐回答(1个)
回答1:

先看你的36V是怎么来的,如果是用那种数显的电笔量出来的,基本上可以不用理它,那种电笔的这种测法不做准,或者说测出的是感应电压,不会伤人。如果是零线对地的36V,也不用担心,有可能是零线上电阻大了点,也可以不用去管。但要是零线跟相线(火线)之间的电压是36V,那你就找人查查吧,你的这个电源插座就没法用了,相线上有较严重的接触不良。
至于发现的闸盒里相线温度高,注意几个问题,你家总线的线径是多大!最大4000W的时候电流大小在16A左右,如果用铜线,则线径必需大于等于2.5平方,才可以安全使用,如果小了,势必会发热,按你说的有烧灼的痕迹,则说明你的总线接头有过载的时候!容易引发火灾!如果用的是铝线,线径至小要4平方(最好用6平的),个人推荐用4平方的铜线,不然在你用电量有波动或是电压有波动的时候能确保安全!!另需加装带漏电保护器的16A的断路器(最大别超32A)。

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