Take a closer look at a 3 way switch wiring diagram. 3 way switch wire colorsthere is no standard for wire colors on 3 way switch travelersthe colors will vary depending on whether nm cable or conduit was used.
Three Way Switch Wiring How To Wire 3 Way Switches Hometips
How to wire a 3 wire switch. Connecting a two wire light fixture to a three wire power supply cable is not an ordinary occurrence. Its something that the majority of people would like to know and can be confusing. 3 way switch wire diagram power to light fixture. When wiring a 3 way switch first screw the terminal screws of the new switch until they are difficult to turn. Connect the two remaining traveler wires to the two brass or light colored screws. The 3 wire cable enters through the top of the first switch box.
I am going to show how to wire a three way switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Two single gang boxes. In this diagram power enters the fixture box. With nm cable the wire colors for travelers will be black and red using 3 wire cablewith conduit the wire colors for travelers could be any color. The black hot wire connects to the far right switchs common terminal.
It does not matter to which terminal screw this wire is connected. Three conductor romex wire 14 gauge. Two conductor romex wire 14 gauge. Connect the wire marked common to the black or dark colored screw. Connect the ground wire to the green screw. This might seem intimidating but it does not have to be.
Connect 3 wire cable in the first switch box. This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. Ignition switch with key lenmumu universal 3 wire engine starter switch for car motorcycle tractor forklift truck scooter trailer agricultural modified car 40 out of 5 stars 94 1099 10. Two three way switches. Three wire supply cables generally carry red and black hot wires of 110 to 120 volts each with a single white neutral wire. With these diagrams below it will take the guess work out of wiring.
The red insulated wire connects to either one of the 2 unused terminal screws shown in the image above to be on the top left and right sides of both 3 way switches.
Gallery of How To Wire A 3 Wire Switch
