4 Way Switch Wiring Diagram

The 4 way is used when you want to control the light or lights from two or more locations. Keep in mind that each light switch will count as two wires when calculating your box fill.

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I have a few of the most common ways in wiring a 4 way switch to help you with your basic home wiring projects.

4 way switch wiring diagram. Wiring diagram for 4 way switch. This diagram is a thumbnail. This 4 way switch diagram 2 shows the power source starting at the fixture.

At the center box with a four way switch black and red from the first box goes to two terminals with the black and red going to the third box to the other two terminals. This 4 way switch diagram 1 shows the power source starting at the left 3 way switch. Each pair of traveler terminals should be wired to the traveler wires from one of the 3 way switches in the circuit.

Typical 4 way switch wiring nm cable in the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. In the diagrams below the first switch 3 way common terminal connects to line voltage. 4 way switch wiring diagrams national electrical code.

Rear view of an old four way switch with copper screw terminals on one side and brass screw terminals on. Power enters at light fixture box proceeds to first 3 way switch proceeds to second 4 way switch proceeds to 3 way switch at end of circuit. It has 4 terminals or poles and consists of two 3 way switches that are modified.

In the third box black and red are travelers with white going to the common. The black line wire connects to the common terminal of the first 3 way switch. A 4 way switch has five terminals.

The switch can be used to control the electricity supplying lights from three locations. Click here to access. A 3 wire nm connects the traveler terminals of the first 3 way switch and the first 4 way switch.

The white neutral splices to the white to the light. Conventional 4 way switch wiring. 4 way switches have four terminals each with two pairs of travelers one set usually black and one set usually brass color.

Basic 4 way switch wiring diagram. A 4 way switch is a double pole double throw dpdt switch. A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch.

A 4 way switch must be wired between two 3 way switches as shown in the diagrams on this page. Look for 4 way switch wiring diagram or step how to wire a four way light switch electrical circuit. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wirenut.

A four switch configuration will have two 3 way switches one on each end and two 4 way switches in the middle. For complete instructions on wiring a basic 4 way switch see our wiring a 4 way switch article. One ground and 4 circuit terminals divided into two matching pairs called travelers.

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