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Hooking Up A 3 Way Switch To A Light







Best to wire a 4-way while next time. Several-wire cable with a vehicle wire is used for this situation. Here is the area to ask: To figure materials needed, check the area between the new switch and the vehicle price.

If not marked, the common terminal may be color-coded black or brass.

In the following illustrations, track each wire with a finger or swigch to its conclusion at the fixture. This way, you will ensure all connections are made properly. Note that s shadings of the liight in the illustrations represent actual color. See color key Hookinh each figure. When Hooking up a 3 way switch to a light with electricity, always turn off the power at the main service fuse or circuit breaker panel before you start working. Be hp the circuit is completely dead! Fixture Controlled by Two Switches: U; Through a Switch Box Two three-way switches control one light with the electric power coming through the first switch, flowing to the second switch, and then to the light fixture.

The ground wire goes through both switch boxes and the ceiling light box and it is connected at all junctions, except the light, with a pigtail short piece of wire and wire connector. The hot wire in the drawing is black and is connected to the COM terminal. The neutral wire is white. Track each with a finger to its conclusion at the light fixture to ensure proper connection. Some light fixtures with a chain pull have a ground connection. Power Through Light Two three-way switches control one light with the electric power coming through the light on a two wire cable. In order to code the white wire, which is used as a power wire from the light fixture through the switches, black electrician's tape is wrapped around the wire in the boxes.

This way, if you or someone else goes into the boxes for repairs, the white wire taped black will indicate a hot wire. Even when taped black, the white wire may never be used to bring power to the fixture terminal.

3-Way Switch Wiring Diagram Variation #3

The red traveller switch wire runs just between the two Hooking up a 3 way switch to a light, not the light. Note connections of the ground wire. Click Image or here to enlarge Diagram Option 3. Power Through Switch Light is controlled by two three-way switches with the light between the switches and the power first going through a switch, then to the light, and onto the second three-way switch. The ground wire is pigtailed with a wire connector at the switch boxes and the ceiling box. Grounding screws often are furnished with boxes and are green. The traveller wire goes through the light ceiling box and that the white wire is taped black between the fixture and second switch.

Fixture Between Two Switches: Power Through Light This light is between switches with the power source from the light. Three-wire cable with a ground wire is used for this connection. The power is routed first through the light ceiling box and then flows to the switches. White neutral wire from the power source is connected directly to the light fixture. The black or hot wire is routed to a switch and then is fed back through the connections via a white wire taped with black electrician's tape to indicate that it is hot. The traveller wires are connected at the fixture box. End-of-Run Lights Controlled by Two Three-Way Switches These end-of-run lights are controlled by two three-way switches with a two-wire cable power source coming through the first three-way switch.

The white or neutral wire goes completely through the connection system with pigtail connections at both switches and the first light box. Only two-wire cable with ground is needed for the boxes at the lights. Power Through Light End-wired lights are controlled with two three-way switches with power routed through the light boxes to two-wire cable to the two switches. Look at how power is connected at lights: White wire taped with black electrician's tape from the nearest switch to a traveller wire that connects the second or end light, then pigtailed to the brass fixture terminal. All wire is utilized this way without waste. You have your two black wires left plus one red wire.

To do this, form a loop with your pliers, hook that loop up to the screw of the common terminal, and then use the screwdriver to tighten the screw. Then, form your new loops for your new switch. Connect the second switch Via Family Handyman Feed the cable coming from your light fixture into your second switch box. Then, feed the cable from the first switch into the second switch box also. At this point, you will see two ground wires, two white wires, two black wires, and one red wire. Again, tie the two ground wires and two white wires together with wire nuts.

Connect the black wire coming from the switch onto the common terminal. Again, form a loop with your needle nose pliers. Hook the loop onto the common terminal screw, and then tighten the screw in place. This will connect the power to your light. Afterwards, connect the remaining black and red wires to the two traveler terminal screws. Turn the switch in the circuit panel back on and then see if you can turn on your lights from both switches. Go back to the top and check your wiring again. If your light can be controlled using both light switches—congratulations!

You have now successfully installed a 3-way switch. Cover up Now, if your light is working, which means your circuit is closed, screw in the light switches into your boxes and put on the cover.



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