4 Way Switch Diagram

This 4 way switch diagram 2 shows the power source starting at the fixture. 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.

4 Way Switch Wiring Diagram Example Conduit Light Switch Wiring 4 Way Light Switch 3 Way Switch Wiring

Keep in mind that each light switch will count as two wires when calculating your box fill.

4 way switch diagram. 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. One ground and 4 circuit terminals divided into two matching pairs called travelers. Rear view of an old four way switch with copper screw terminals on one side and brass screw terminals on.

I have a few of the most common ways in wiring a 4 way switch to help you with your basic home wiring projects. A 3 wire nm connects the traveler terminals of the first 3 way switch and the first 4 way switch. 4 way switch wring diagram.

The black line wire connects to the common terminal of the first 3 way switch. A 4 way switch must be wired between two 3 way switches as shown in the diagrams on this page. Each pair of traveler terminals should be wired to the traveler wires from one of the 3 way switches in the circuit.

In the third box black and red are travelers with white going to the common. The white neutral splices to the white to the light. Watch the 4 way switch video below and pay attention.

They all must be between the two 3 way switches. The other pair of the second switch 4 way travelers connect to one pair of the third switch 4 way travelers. This diagram is a thumbnail.

You can have an indefinite number of 4 way switches in a circuit. In the diagrams below the first switch 3 way common terminal connects to line voltage. The 4 way is used when you want to control the light or lights from two or more locations.

If you understand how to wire a 3 way switch you ll have no issues with a 4 way switch. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wirenut. A 4 way switch has five terminals.

A four switch configuration will have two 3 way switches one on each end and two 4 way switches in the middle. A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch. Look for 4 way switch wiring diagram or step how to wire a four way light switch electrical circuit a 4 way switch is a double pole double throw dpdt switch.

A 4 way switch is always placed in between two 3 way switches. Click here to access note. To view it at full size click on the diagram.

It has 4 terminals or poles and consists of two 3 way switches that are modified. The first switch 3 way travelers brass color connect to one pair of the second switch 4 way travelers black or brass color. This 4 way switch diagram 1 shows the power source starting at the left 3 way switch.

4 way switch wiring diagrams national electrical code. For complete instructions on wiring a basic 4 way switch see our wiring a 4 way switch article. The switch can be used to control the electricity supplying lights from three locations.

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