我估計有兩個可能.

來源: smlandlord 於 2024-03-15 01:22:32 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (130 bytes)

1. 燈的零線和火線 acrossed or reversed.

2. Possible that some very old house wirings not have a neutral.

請您先登陸，再發跟帖！