Installing a 3 way light switch is a much more involved process than installing a single pole light switch. To wire a 3 way light switch youll need 2 3 way light switches 2 2 wire non metallic cables 1 3 wire non metallic cable and 2 6 inch grounding wires.
Light Switch Wiring Diagrams Do It Yourself Help Com
3 switch light switch wiring. Connect the two remaining traveler wires to the two brass or light colored screws. The 2 wire source feeds to an adjacent switch for a differ. The black and red wires between sw1 and sw2 are connected to the traveler terminals. Three wire cable runs between the switches and 2 wire cable runs to the light. 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 hot from the source is spliced to the black wire running to the combo and to the input side of the switch.
In this diagram the electrical source is at the first switch and the light is located at the end of the circuit. Add an electrical box for the second three way switch in the basement. The old switch had four wires going into l1 l2 l3 and l4. The white neutral from the source is connected directly to the light fixture. Turn off the correct circuit at your electrical panel. Re wiring 3 way light switch hi guyscould really do with some advice for replacing a 3 way single light switch.
First run a 2 wire cable from the wall power to the black screw on 1 of the switches. There are a number of configurations that can be used for wiring a 3 way switch. However it can be done with a little patience and attention to detail. Connect the wire marked common to the black or dark colored screw. Source 1 comes in at the light fixture and a 3 wire cable is run from there to the switch half on the device. Connect the red and black wires from switch 2 to the remaining terminals.
Its likely youll also need to replace the existing switch box with a larger one to accommodate the extra wires for the 3 way switch. Im moving a light switch to a different wall and have found that the cable from the switch to the light has 3 wires but i dont know why. Connect the ground wire to the green screw. Connect the remaining white wires and ground the switch to the switch box. Wiring diagram 3 way switch with light at the end. When wiring a 3 way switch first screw the terminal screws of the new switch until they are difficult to turn.
Either way complete these five steps for 3 way light switch wiring. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. Connect the wiring at switch 1 attaching the black wire from the power source to the switchs labeled common terminal.
Gallery of 3 Switch Light Switch Wiring
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