This allows you to control a load from other locations in addition to the 2 locations that a 3 way circuit provides. Do you need a 3 way switch wiring diagram.
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4 way switch wiring diagram power at switch. For complete instructions on wiring a basic 4 way switch see our wiring a 4 way switch article. This 4 way switch diagram 1 shows the power source starting at the left 3 way switch. It is very important to pay attention to these as shown in the 4 way switch diagram. The load wire is in one 3 way switch box and the line from the power source is in the other 3 way switch box. When the switch is operated current will either travel straight through or crisscross. I have a few of the most common ways in wiring a 4 way switch to help you with your basic home wiring projects.
Power from light fixture to light switch. Two of the terminals are brass and labeled input the other two are black and labeled output. To make this circuit work a 3 way dimmer can be used in place of one or both of the standard 3 way switches. This is the wiring for a dimmer in a 4 way circuit. A 4 way switch is always wired between a pair of 3. First of all we need to go over a little basic terminology on switches.
The 4 way is used when you want to control the light or lights from two or more locations. A typical four way switch wiring diagram. To view it at full size click on the diagram. How to wire a 4 way switch. Two terminalpoles are labeled in and two are labeled out pairs of wires called travelers will connect to each side. A 4 way switch is used when you have three or more locations that operate a light or group of lights.
A 4 way switch has 4 terminals or poles. The 4 ways are in between. A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch. The black line wire connects to the common terminal of the first 3 way switch. Four way switch wiring diagrams. Wiring a 4 way switch is simply adding a switch to an already existing 3 way switch circuit.
4 way switch schematics can also be used for intermediate switches. When wiring a 4 way switch circuit as shown below. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wirenut. This diagram is a thumbnail. 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.
A 3 wire nm connects the traveler terminals of the first 3 way switch and the first 4 way switch. The lever does not have an on or off label. Study the 4 way switch and the manufacturers directions. 4 way switches can be quickly identified by the 4 screw terminals in addition to the greengnd screw terminal. 4 way dimmer switch wiring diagram. This 4 way switch diagram 2 shows the power source starting at the fixture.
Click here to access note. Three wire cable runs between all the switches and 2 wire cable runs to the light.
Gallery of 4 Way Switch Wiring Diagram Power At Switch
