Outrageous 3 Way Wall Switch Wiring
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.
3 way wall switch wiring. The black wire from the other 3 way gets connected to the line black wire. Touch the probes to the 3 wires removed from the switch until you get a reading on the tester indicating continuity. Set the electrical tester to the continuity or ohms setting.
These are the runners of the circuit. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. In a hallway or large room for example installing three way switches at both ends lets you turn the light fixture on or off from both locations.
Each three way switch has two hot terminals like a conventional switch as well as an extra terminal that connects it to the other switch. Three way switch wiring source in middle. The hot terminal on the light fixture is connected to the black wire running to the common terminal on sw1.
A three way wall switch is a common type of light switch that makes it possible to control a ceiling light or other electrical fixture from two different locations in a room. This is the 3 wire cable which you must have to wire a 3 way light switch. 3 way switch wiring diagram depicting all wires in the ceiling junction box.
The third wire is the common wire that feeds the light fixture and is connected to the black screw on the switch. Now go the other switch location. Either way complete these five steps for 3 way light switch wiring.
With these diagrams below it will take the guess work out of wiring. Three way switches are always used in pairs and include special wiring connections. 3 way switch wiring diagram.