How Do You Wire Three-Way Electrical Switches?
There are a lot of times that it would be convenient to have a switch at the other end of a room or hallway. To have a switch at every doorway entering a room just makes sense. Fortunately, there is a three-way switch designed to do that. All you have to do is wire a three-way switch at the two locations you would like to have a switch. Now you have the convenience of two switches that turn on the same light. Find the breaker that feeds the light that you want to work on and turn that breaker off. Mount the 2-by-4 box where you would like the new switch. Run the black, white, red, and green wires from one switch box to the other. Leave 10 to 12 inches of wire hanging out of each box so that you have plenty to work with. Strip the insulation off about 1 inch of the ends of the wires. Remove the switch cover on the existing switch and take the switch out of the box. It has two black wires on it. One black wire goes to the breaker you turned off in the panel box, and the other goes to the
