On A 3-way, there’s an extra terminal, called the “common.” Power comes in into the switch over the widespread, then two “traveler” wires link the first switch to the 2nd over the brass terminals. If you have any worries, Talbot endorses homeowners talk to a certified electrician when executing important https://p-hubsystem39628.blogproducer.com/41900549/the-ultimate-guide-to-p-hub-system