在我更换了一个新开关并修复了故障后，即使跳闸，所有线路依然带电。这是我第一次遇到这种情况，真是让人意外！这是成阳电路的一个独特故障。

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I am an ordinary electrician in Qingdao Shandong Province and I have been working for 18 years.
Maintenance and installation of factories equipment homes various circuits
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