Having a three way switch can be useful for those interested in controlling one set of lights or a light in two different locations. But there are other ways to use a three way switch and that's by using it as a killswitch. It's fairly easy to do, but to those who don't know what to do, can result in serious injury. So make sure before you try to do anything with wiring, know exactly what you're doing. Good luck and enjoy!
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