4 Way Switch Wiring Diagram Switch First

The hot source is. A four switch configuration will have two 3 way switches one on each end and two 4 way switches in the middle. 4 way switches have four terminals each with two pairs of travelers one set usually black and one set usually brass color.

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Then connect the black wire coming from the fixture to the black wire going to the first 3 way switch.

4 way switch wiring diagram switch first. Two wire cable is run from the light to sw1 and 3 wire cable runs between the three switches. Wiring a 4 way switch is simply adding a switch to an already existing 3 way switch circuit. Alternate 4 way switch wiring is fairly complex power enters the first light fixture box instead of the first 3 way switch box this wiring configuration is no longer allowed as of the 2011 nec if a neutral wire is not present in the switch boxes. 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.

This allows you to control a load from other locations in addition to the 2 locations that a 3 way circuit provides. In the diagrams below the first switch 3 way common terminal connects to. Conventional 4 way switch wiring. Below is another method for wiring 4 way switches.

This diagram illustrates wiring for a 4 way circuit with the electrical source at the light fixture and the switches coming after. First of all we need to go over a little basic terminology on switches. The electrical switch box that contains the line and load wires may need to be bigger than the other switch boxes especially if there are other wires going into the switch box. Next connect the white wire coming into the box to the white wire on the fixture.

To wire a 4 way switch start by turning off the circuit breaker for the room you re working in. More 4 way switch wiring diagrams four way switch wiring schematic. 4 way switch wiring with light first. 4 way switch wiring diagram with the power feed through 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. How to wire a 4 way switch. In this method the power source is at the light fixture and the two 3 way switches follow after the light fixture. A 2 wire cable is connected from the light fixture to the first 3 way switch.