[問題] 請問水火線的測試
(不知道在這個板適不適合發這篇 如果不適合請板主刪除)
我用驗電筆可以簡單測知「插座」的水火線
但對於「電器」的水火線卻無法得知
我在網路上查到可以用三用電表查
但不知詳細步驟
請問真的可行嗎?
有沒有更便宜簡便的方法?
感謝回答
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