Understanding Single Pole and 3-Way Switches

Light switches are everywhere. Flip up, the light goes on. Flip down, the light goes off. But do you really know how they work? And what about 3-ways switches – those funky arrangements where one light is controlled by two different switches?

This video gives a great visual explanation of single pole (one switch controls a light) and 3-way (two switches control a light) switches.

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