With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. There are two methods of making 2 way switching connection one is 2 wire control and another is 3 wire control.
Wiring A 2 Way Switch
How to wire a 2 way light switch diagram. Do not forget to use brown slewing on the blue wire. 2 way light switch 3 wire system new harmonised cable colours 2 way switch 3 wire system old cable colours 2 way switch two wire control three way switching. A 2 way switch wiring diagram with power feed from the switch light. Two way switch can be operated from any of the switch independently means whatever be the position of other switchonoff you can control the light with other switch. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. The power source comes from the fixture and then connects to the power terminal.
Connect the line brown wire to the l terminal together with the supply cable line wire and connect the blue wire with the brown slewing to the swl terminal together with the lamps line wire. 3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control. Notice the black wire is the only wire that we are controlling through the 2 way switch. The next length of the twinearth cable will run from the light to the first two way switch. 2 way light switch 3 wire system new harmonised cable colours 2 way switch 3 wire system old cable colours 2 way switch two wire control three way switching. Simple 2 way light switch with the power feed via the switch.
You have an incoming hot wire black going to one screw it does not matter if you use the brass or silver screw on the side of the 2 way switch and a black wire from the other screw on the 2 way switch going to the load light ceiling fan etc. You will see that there is a hot wire that is then spliced through a switch and that then goes to the hot terminal of the light. 2 way light switch with power feed via switch two lights. Simple 2 way light switch with the power feed via the light fixture. Wiring a 3 way light switch. 3 way light switching new cable colours 3 way light switch old cable colours 3 way light switch using a two wire control.