3 way light switch schematic - IOT Wiring Diagram

A 3-way light switch is an essential piece of wiring in any multi-switch setup. This type of light switch allows you to control multiple lights from two different locations, such as at the top and bottom of a staircase. Understanding how a 3-way light switch works and connecting its wiring correctly are essential steps for any basic electrical wiring project.

Understanding the schematic for a 3-way light switch is an important part of the wiring process. The wiring diagram shows the two source wires coming from the power supply. From here, two separate “traveler” wires run between the two switches where they can be connected to the two sides of each switch. This creates a closed circle, or looping connection, when all connections are made properly.

Installation of a 3-way light switch begins with turning off the power and disconnecting the existing wiring. From here, the two source wires are connected to each end of the switch and two traveler wires to the remaining connections. Any ground wires must also be connected as indicated by the wiring diagram. Finally, the cover plate is connected and secured. Once the installation is complete and power has been turned back on, all connections should be tested for proper functionality.

Installing a 3-way light switch is a job that any homeowner can complete with a little knowledge and determination. With a careful understanding of the schematic and some basic safety precautions, wiring a 3-way light switch will result in a reliable and functional connection. Proper wiring will ensure that you can easily and safely control your lights from two separate locations.

3 Way Switches Electrical 101