Two wire cable is run from the light to sw1 and 3 wire cable runs between the three switches. As you will see most 4 way switch wiring is placed between the wiring of two 3 way switches therefore a 4way switch is installed with two 3way switches.

4way Switch Using 14 2 Wires Why Didn T My House Burn Down
4 way switch wiring diagram light middle. I did not include grounding conductors on the 4 way switch wiring diagrams in order to keep them simple. Two cubic inches are required by the national electrical code for each 14 wire. More than three locations to control light fixtures utilizes 3 way switches at the end of the switched circuit and 4 way switches in the middle figure 9. I have a few of the most common ways in wiring a 4 way switch to help you with your basic home wiring projects. One ground and 4 circuit terminals divided into two matching pairs called travelers. To illustrate the 4 way switch wiring switch boxes and fixture boxes are not shown but are obviously required for every application.
A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch. See tables 31416a b. A 4 way switch has five terminals. Do you need a 3 way switch wiring diagram. Variety of 3 way switch wiring diagram light in middle. It reveals the elements of the circuit as streamlined shapes and the power and also signal links in between the gadgets.
4 way switch wiring diagram. It is important to understand how these switches are wired before attempting to troubleshoot or replace. Jan 9 2019 stunning 4 way switch wiring diagrams light in the middle s. 4 way switch wiring with light first. A wiring diagram is a streamlined traditional photographic depiction of an electrical circuit. 4 way switch not to be confused with a 2 pole switch.
The 4 way is used when you want to control the light or lights from two or more locations. Figure 8 five switches controlling a light fixture utilizing two 3 way switches and three 4 way switch with power to light fixture. The 4 way terminals are labeled in and out two of each. 4 way switch configurations are used to control lights with three or more switchesa 3 way switch is used on each end with one or more 4 way switches in between the two 3 way switchesthey do not have an onoff position like single pole switches. Each pair of traveler terminals should be wired to the traveler wires from one of the 3 way switches in the circuit. A 4 way switch has four terminals do not confuse with and purchase a 2 pole switch by mistake.
A 4 way switch must be wired between two 3 way switches as shown in the diagrams on this page. Power from light fixture to light switch. I have a diagram for this light switch wiring method on my 3 way switch page. This diagram illustrates wiring for a 4 way circuit with the electrical source at the light fixture and the switches coming after.