Toggle Switch 3 Way Diagram. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut. The white wire becomes the energized switch leg as indicated by using black or red electrical tape.
In this diagram the incoming hot wire attaches to the first switch s common dark colored terminal. 3 way switch wiring diagram. Diagram 3 above shows the electricity source starting at the right 3 way.
An example of three way switch wiring with the line and load in the same 4 square electrical box.
The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut. Diagram 1 above shows the electricity source starting at the left 3 way switch. Take a closer look at a 3 way switch wiring diagram. Terminal 1 is connected to one load or accessory terminal 3 is connected to another load or accessory.