This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch. Knowing how to wire a three way lighting switch comes down to understanding the operation of this contraption.
2 Wire Switch Loop Controlling 2 Outlets Replacing With 3
3 wire switch diagram. The black line wire connects to the common terminal of the first 3 way switch. Two wire cable runs from the light to sw1 and 3 wire cable runs between sw1 and sw2. A 3 way switch wiring diagram is a simple drawing showing how to connect the wires to each of the four screws on the 3 way switch. 3 way switch wiring with light first. This is the 3 wire cable which you must have to wire a 3 way. Regardless of what 3 way switch wiring diagram youre following youll need to use a 3 wire cable to connect the two 3 way light switches.
Connect greencopper wires together. The hot source wire is spliced at the light box to the white cable wire running to the first switch box. The diagram below is based on the video you watched above. You must completely forget about the notion of a switch being a simple openclosed circuit and look at the diagram of the circuitry of this modern alternative. Connect the white wires together. At this first switch the black feed wire is connected to the common screw on the switch.
In this diagram the incoming hot wire attaches to the first switchs common dark colored terminal. This might seem intimidating but it does not have to be. The receiver is placed inside the body of the fan and the. Turn power on and test. 6 wiring a ceiling fan with a remote most newer fans come with ceiling fan remotes for ease and convenience. A three way switch is fundamentally different in its operation from a regular two way switch.
In this updated diagram 3 wire cable runs between the receptacle and switch and the red cable wire is used to carry the hot source to the switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Take a closer look at a 3 way switch wiring diagram. In this diagram the source for the circuit is at the light fixture and the two switches come after. With these diagrams below it will take the guess work out of wiring.
What is the black screw for on a 3 way switch diagram. The black screw on a 3 way switch diagram is for the continuous hot wire that comes from the circuit. This means that there is a black hot wire a white neutral wire and a bare copper grounding wire. Traveler wires are interchangeable. The neutral from the source is spliced through to the switch box using the white wire and in this diagram the white wire is capped with a wire nut. 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.
Tuck all wires back in their boxes. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. Connect the red wire to the screw in switch 2. Typical 3 way switch wiring nm cable. At the first switch location the feeder wire from the power source is a 2 wire cable with ground. The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch.
Gallery of 3 Wire Switch Diagram
