Schematic 3 Way Switch Wiring Diagram Power At Switch

Wires consisting of a line a load a neutral a pair of travelers and two 3 way switches.

Schematic 3 way switch wiring diagram power at switch. With these diagrams below it will take the guess work out of wiring. Take a closer look at a 3 way switch wiring diagram. The first step in any electrical project is to make sure there is no power going to the circuit you plan to be working on. If you are trying to troubleshoot a 3 way switch operation you will need to identify the function of each wire.

Three way switches allow for controlling a light fixture from two separate locations these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room. To illustrate the wiring of these 3 way switches switch boxes and fixture boxes are not shown but are obviously required for every application. The travelers actually pass the electricity between the two 3 way switches as well as the 4 way switches shown in the 4 way switching wiring diagrams. A wiring diagram is a streamlined conventional pictorial depiction of an electrical circuit.

Basic 3 way switch diagram how to wire 3 way light switch step by step. Typical 3 way switch wiring nm cable. This 3 way light switch diagram shows connections when the power comes into the first switch on to the second switch and then on to two or more lights switched by the 3 way circuit. Assortment of 3 way switch wiring schematic.

The black line wire connects to the common terminal of the first 3 way switch. This might seem intimidating but it does not have to be. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. Traveler wires are interchangeable.

Pick the diagram that is most like the scenario you are in and see if you can wire your switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box.