Wire Three Way Switch Diagram. The black and red wires between sw1 and sw2 are connected to the traveler terminals. With these diagrams below it will take the guess work out of wiring.
3 way switch wire diagram power to light fixture in this diagram power enters the fixture box. This method might be used when power is available in the ceiling but switch boxes are on opposite wallsit is often easier to run the cable up into the ceiling light box instead of between switches. Print the electrical wiring diagram off and use highlighters in order to trace the routine.
This wiring diagram helps you understand the type of cables you will require for this configuration.
This wiring diagram helps you understand the type of cables you will require for this configuration. Feed in a lengthy 14 3 nm romex cable or 12 3 if you are connecting to a 12 gauge wire. A three way switch is the type that turns on lights from both ends of a hallway. Three way switching 3 wires three wires between the two end switches probably using 3 core and earth cable.