雙切開關LED微亮的問題 - 居家修繕
By Sierra Rose
at 2015-09-03T19:54
at 2015-09-03T19:54
Table of Contents
我家樓梯間的雙切~是用省線接法~
即上下兩開關的1,3...都是接火線和中性線
(兩條火線應都是同一條迴路)
相對1,3的0....則各接到一條燈泡去~
於是上下開關~就會有4種組合
即
火+中性 燈亮
火+火 燈不亮(因同一迴路故不會變220V)_
中性+火 燈亮
中性+中性 燈不亮
今燈泡為1W的LED燈泡~兩個雙切開關皆為無螢光開關~
於關閉時會有微亮情況~
我知道只要有微小電壓時~就有可能出現這種情況~
也有人會串連電容來解決~
但我想不通的是~
如果火+火會有微亮我還OK~
中性+中性會有微亮~?
那它的能源究竟哪來的?
(我試過上下亂切~開閉時都會微亮...)
總不會中性線在牆中因損壞或潮濕和火線連在一起了???
那應該會有火花吧?
我想不通中性+中性為什麼還會有能源可微亮~
我唯一想到的~
就是會不會雙切開關有問題....會微漏給中性線...
謝謝~
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居家修繕
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