Staircase Wiring Circuit Diagram 3 Way Switch. A point often overlooked is the traveler wires. Three way switches each have three connections and are used in tandem.
They've also remained largely unchanged for decades. Take a look at these two diagrams below. Three-way switches are tricky to install, especially for DIYers who are replacing a bad switch.
How to control a light from two switches.
A three-way switch has three terminals, and the switch connects the first terminal to either the second or the third terminal, as shown here In this diagram, a normal piece of wire comes from the fuse panel to the first three-way switch.
Recommendations before beginning: ALWAYS power off your circuit breaker before working with electricity. line-switch-switch-load If your wiring is like either diagram below, you can wire your smart switch. I can turn the light on and off at the right side switch (toggle) and then and only then can I turn off the. In this diagram the source for the circuit is at the light fixture and the two switches come after.