3 Way Wiring Diagram. The white wire becomes the energized switch leg as indicated by using black or red electrical tape. With these diagrams below it will take the guess work out of wiring.
The cable consist of a black wire a. Three way switching 3 wires three wires between the two end switches probably using 3 core and earth cable. Its submitted by supervision in the best field.
In this diagram the incoming hot wire attaches to the first switchs common dark colored terminal.
Three way switching 2 wires two wires between each switch. The black and red wires between sw1 and sw2 are connected to the traveler terminals. Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. Before we get to wiring diagrams here is how the 3 way switch terminals are color coded.