If a light switch fails to function, it should be replaced.
Single-pole switches are the most common light switches in a home. Here's how to swap outdated three-way light switches for something much better. To create lights that operate with two separate switches, the electrician uses two special pieces of equipment in the circuit:. This page describes how to use 3-way and 4-way switches to control lights from two or more locations. How to wire a 2 way switch.
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