With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. With these diagrams below it will take the guess work out of wiring.

Wiring Diagram Way Switch New Way Smart Switches Wiring
Different 3 way switch wiring. Wires consisting of a line a load a neutral a pair of travelers and two 3 way switches. 3 way dimmer switch wiring diagrams. To do this the opening steps getting ready and assembling tools remains the same. It is very important that in order for the 2 switches to work as they are intended to that the correct wire is attached to the common screw. The wiring method will. Components of 3 way switch wiring.
3 way switches are useful for large rooms with multiple entrances but require a bit more wiring than a standard single pole switch. If you have any problems with these switches it may be best to call an electrician. The following 3 diagrams show the wiring for a specially made dimmer that can be used in these circuits in place of either of the the 3 way switches or both. Before reading this page you may want to visit 3 way switches and 4 way switches. 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. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.
When it comes to the 3 way switch wiring use a black wire in the top 2 wire conductor to attach the switch to the source. See alternate 3 way switch wiring configuration for another way 3 way switches may be wired. If you are trying to troubleshoot a 3 way switch operation you will need to identify the function of each wire. Below is perhaps the simplest arrangement panel to switch to switch to light. 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. At the switch itself there are 3 main electrical screws one of these 3 screws is distinctly different in color perhaps darker than the other 2.
Colors are shown consistent with the nec. This might seem intimidating but it does not have to be. This screw connection is called the common screw. This arrangement allows for lowering the lights in a 3 way circuit. Unfortunately not all 3 way switches are wired the conventional way. A 3 way switch allows you to turn a light on or off from two different switches.
3 way switch wiring diagram. All three way switch and 2 way switch wiring diagrams have the same basic components. However that is not the only way to convert a single pole switch to a 3 way. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. The diagrams below show the conventional wiring for 3 way switches. Here are several variations of using 3 way switches to control lights from two locations.
Wiring a 3 way light switch. If you want to go another way you can. Take a closer look at a 3 way switch wiring diagram.