요청 내용
“Two-way lighting on 230 V AC: one lamp switched from both ends of a hallway by two SPDT switches joined by two strappers.”
그렇다면Add a third switch in the middle as an intermediateLabel the live, neutral and strapper wires
이 도면에 담긴 내용
그 이면의 의사결정을 읽어 보세요.
01
Use SPDT switches with common, normally open, and normally closed terminals
02
Connect traveler wires between the switches' non-common terminals
03
Place the lamp in series between the second switch's common and neutral
Ideal for staircase lighting, hallway controls, or any room with two entrances where a single light fixture must be switched from either side.