How do you hook up a three way switch, plan the wire path
The source power black wire is coming in from the left. This will affect the way that you perform the installation.
Attach the second switch Clamp the second electrical box to the wall and wire a three-way switch, following Figure B. For secure connections, hook the ends with a needle nose pliers before placing them under the screw terminals Photo 4. The position of the screws varies by manufacturer, but the common terminal is always a different color than the other two hot terminals.
Pull the cables from the front as you push the boxes back into the wall. If the circuit breaker is 20 amps rather than 15 or the existing wire is 12 gauge, use size cable.
A, also wrap black tape around the white wire from the switch to the light. If you're simply replacing a 3-way switch, the diagrams below will show the different scenarios on how your is match a good dating website could possibly be wired.
Connect the old white wire to the existing cable headed to the light.
Make life easier with a three-way switch
Connect these to the ground terminal on the first switch. This takes extra effort because you have to cut into, and later repair, finished surfaces. Tell us more about it?
Pull the cables from the front as you slide the box into the wall opening. It ties into the common on the left switch.
Wiring a 3-Way Switch
You must use this type of cable to ensure correct voltage and the number of wires. Connect the black wire from the power source to the common terminal of the first switch.
This black wire used to be attached to the old switch, and runs directly to the light. Sign Up for our newsletters! Snap off the plaster ears and install the switch.
Tape the hot white wire Wrap the second white wire with black tape to show that it acts as a hot wire. Power to Switch WH. With a pair of 3-way switches, either switch can make or break the connection that completes the circuit to the light.