3 way light switch

Today’s home inspection had a problem with the wiring for a 3 way switch. Wiring a 3 way light switch so that you can an operate a light or fan from two different locations can be tricky. It is my understanding that  most of the time it’s a wiring concern when found not working. Today, I’m not so sure. They will need to hire an electrician and confirm what is going on. I can say that the light switch installed was the wrong type. A 3 way light switch will not have any writing on the switch. A switch not designed for a 3 way will say “ON”

Below is a diagram of things I will never see during a home inspection, as it is concealed inside the walls and ceilings.

3-way light switch

Sample way to quickly identify a proper 3 way switch

IMGP4014

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