火锅店内电压来回跳，最高电压竟有300V，电箱各个部件却都正常？

Hello everyone, here is 【Chengyang Electrician Circuit】 The only YouTube channel. I am an ordinary electrician in Qingdao, Shandong. I have been working in this field for 18 years. I repair and install factories, equipment, homes, and all kinds of circuits. I share electrical knowledge, repair processes, and various circuit repair case videos. You can subscribe to my videos if you like.    / @城阳电工电路   #Maintenance #Vlog #Circuit #Repair #Knowledge #Encyclopedia Our videos are designed to provide valuable content for viewers, and there is absolutely no violation of any regulations.