Three Way Light Switch Wiring Diagram. A three way switch is fundamentally different in its operation from a regular two way switch. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture.
The black line wire connects to the common terminal of the first 3 way switch. Three way switch wiring with light middle. The power source is coming to light fitting first.
In the above 3 way switch wiring diagram at each switch the black wire gets connected to the copper or black screw.
Traveler wires are interchangeable on each switch. Three way switch wiring with light middle. The electricity source and light fixture are connected to the same switch. Want to turn a lamp on with a light switch.
