3 Lights 3 Switches 1 Circuit. Okaaay, but which is the permanent live from the lighting circuit, which is the switched live back to the ceiling light, which is. When both switches are down, the circuit is complete (bottom right).
But having more than one switch open doesn't create any problems. A light or lights can be controlled by more than one switch. Here is our selection of three way light switch circuit diagrams.
In this video, I explain just how easy it is to add a three-way switch to an existing single pole (one) switch lighting circuit.
If one switch is up and one is down, the current reaches a dead end, no current flows and the bulb is off.
This is where two switches control the same light (or lights). Only three types of switches are needed to make any multiway switching circuit This switch is very useful on stairs etc where you can have a switch at the bottom and top of the stairs. Put a pressure switch in each of them.