With conventional wiring the common wire from one switch connects to line the common wire from the other switch connects to the load lights. The source in this circuit is at the first switch and the light fixture is.

Wrg 4232 3 Way Electrical Schematic Wiring Diagram
3 way switch wiring schematic. All of the switches shown below are 3 way. 3 way switches have three terminals one common usually black color and one pair of travelers usually brass color. This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch. The white wire becomes the energized switch leg as indicated by using black or red electrical tape. Components of 3 way switch wiring all three way switch and 2 way switch wiring diagrams have the same basic components. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut.
Three way switch wiring with light middle. This might seem intimidating but it does not have to be. Wires consisting of a line a load a neutral a pair of travelers and two 3 way switches. With these diagrams below it will take the guess work out of wiring. 3 way switch wiring with. Interested in a 4 way switch wiring diagram.
Take a closer look at a 3 way switch wiring diagram. What is the black screw for on a 3 way switch diagram. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.
Traveler wires are interchangeable on each switch. In this diagram the incoming hot wire attaches to the first switchs common dark colored terminal. In this diagram the electrical source is at the first switch and the. 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. Typical 3 way switch wiring nm cable. The black line wire connects to the common terminal of the first 3 way switch.
If you are trying to troubleshoot a 3 way switch operation then you will need to identify the function of each wire. The diagram below is based on the video you watched above. 3 way switch wiring diagrams wiring diagram 3 way switch with light at the end. Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. 3 way switch 2 3 way wire which has black white and red coated wires and of course a copper ground wire electrical boxes of appropriate size to hold 3 way switch and wire wire cutters and strippers standard electrical tape a non contact voltage tester 3 way light.