匪夷所思，让我把火线和白线接起来？！这个的确还没试过：

To make a switch loop, connect the incoming hot (black) wire to the white neutral wire that runs to the switch. Mark the white wire at each end with black tape or black paint to indicate it is hot. Now the incoming white neutral wire is attached to the light fixture, as usual, and the black wire from the switch is connected to the light fixture. In this way, the hot wire initially bypasses the fixture, then loops through the switch and back to the fixture.

http://www.improvenet.com/a/what-is-a-switch-loop-and-how-does-it-work?

 

所有跟帖： 

• 這方法大致是為了省多加一條線而形成的switch loop -calvinwch- ♂ (56 bytes) () 07/20/2017 postreply 06:52:18

• 那條打那條, 见图： -marketwatcher- ♂ (318 bytes) () 07/20/2017 postreply 07:00:01

• 還有是...你的switch 是3 way 不是2 way. -calvinwch- ♂ (0 bytes) () 07/20/2017 postreply 07:06:52