Tag Archives: 4 way light switch

4 way light switch circuit wiring diagrams

FourFour way switch lighting circuit diagrams

Here is our selection of four way switch circuit diagrams. The electrical symbol indicates where power enters the circuit.

4 way switch with the the power source via the switch4 way light switch with power feed via the light switch
4 way switch with the the power source via the light4 way light switch with power feed via the light


4 way light switch with power feed via the light

This circuit diagram shows wiring for a 4 way circuit with the power source at the light fixture and the switches following.

A two-wire cable (C2) is run from the light to the first switch (SW1) and a 3-wire cable runs between all the switches. The hot source is connected to the common terminal on the first switch (SW1) and the hot terminal on the light fixture is spliced through all the light fixture to the common terminal of the last switch (SW3).

The travelers run from the first switch (SW1) to one set of terminals on the 4 way (SW2) and from the second set to the travelers on the last 3 way (SW3). The hot to the light is from the common terminal of SW3 (spliced through each switch box).
4 way switch with the the power source via the light


How to wire a 4 way light switch with power feed via the light switch

In this 4 way light circuit the power source is via the first switch (SW1). The hot connects to the common on that switch and the neutral is spliced through all the switch boxes to the neutral terminal of the light. A Three-wire cable runs between all the switches connecting the travelers.

A two-wire cable (C4) connects the last switch (SW3) to the light fixture, the common on that switch connects to the hot terminal on the light.
4 way switch with the the power source via the switch


4 way switch (or crossover switch)

Four-way switches have four terminals. This type of switch works in combination with two three-way switches to control electricity to lights from three (or more) locations. They support hot conductors (traveller wires), which receive and transfer electricity from each of the three-way switches.

Animated circuit diagram showing the operation of a 4 way switch

Browse lighting diagrams that use a 4 way switch
You may also be interested to see how a two way switch works
You may also be interested to see how a three way switch works