On A 3-way, there’s an additional terminal, known as the “prevalent.” Power comes in for the switch within the widespread, then two “traveler” wires join the primary switch to the second on the brass terminals. Should you have any issues, Talbot recommends homeowners seek the advice of a licensed electrician https://smartswitches25322.blogs-service.com/65625176/the-ultimate-guide-to-p-hub-system