Nice Double Switch 3 Way Wiring
The following is the simple schematic of a three wire 2 way switch wiring.
Double switch 3 way wiring. Though it is not. Connect the wires to the new 3 way switches with ground screws using one of the two wiring diagrams fig. This is the 3 wire cable which you must have to wire a 3 way light switch.
To wire a double switch you ll need to cut the power remove the old switch then feed and connect the wires into the double switch fixture. Knowing how to wire a three way lighting switch comes down to understanding the operation of this contraption. You must completely forget about the notion of a switch being a simple open closed circuit and look at the diagram of the circuitry of this modern alternative.
The l1 terminals of both the switches are connected to line or phase or live of the ac supply. A double pole three way switch is able to integrate both of these functions into one. Feed a length of 14 3 type nm cable or 12 3 if you re connecting to 12 gauge wire between the two boxes.
White black and red plus a bare ground wire. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire.
Wiring a 3 way switch with multiple lights. Two 2 wire cables run between each light. With this switch you will be able to control two separate circuits from two different locations for example being able to simultaneously turn on a light and a fan from next to the door you would use to enter a room and then.
3 way switch wiring diagram depicting all wires in the ceiling junction box. In this circuit two light fixtures are shown but more can be added by duplicating the wiring arrangement between the fixtures for each additional light. A double pole switch allows you to control two separate circuits using the same switch while a three way switch allows you to control a single circuit from two different locations.