How A Three Way Switch Works. It can also help to diagnose a three-way switch that does not work because someone wired the circuit incorrectly. Three-way light switches control a light from two locations, such as from both ends of a staircase or hallway.
Learning how to wire a three-way switch can be complicated and require some patience, but this guide will walk you through running an electrical cable and connecting the two. Before proceeding, make sure you are comfortable working with. 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.
Three and four-way switches work by opening and closing the circuit by numerous variations.
Keep in mind, this tutorial is more for wiring purposes than the actual installation of wall boxes and running.
So, to turn the light on, she carefully negotiates the stairs to the top, and flips on the switch. Three-Way Switch Wiring: Facts and How-To. Then a handyman installed a rocker and ended up doing something wrong.
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