On A 3-way, there’s an extra terminal, known as the “common.” Power is available in on the switch to the prevalent, then two “traveler” wires link the primary switch to the second over the brass terminals. These are typically only schematic diagrams to clarify about the different styles of preparations https://smartpowerpoint54185.slypage.com/35397269/the-greatest-guide-to-smart-power-point