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4-way-switch

4 Way Switch Diagrams
Summary: Fully explained 4 way switch diagrams. 4-way switches are a convenient way to operate lighting fixtures from three or more locations. The electrical wiring adds additional wiring to the same principles of 3-way switching.

Understanding Basic 4 way switch diagrams for Home Electrical

4 way switch wiring

4-Way Switches provide switching from three or more locations.

If more than three switches are needed, simply place more 4-way switches between the three way switches.


As you will see, most 4-way switch wiring is placed between the wiring of two 3-way switches.


4-Way Switch Wiring Diagrams
Please Note:
To illustrate the 4 way switch wiring, Switch boxes and Fixture boxes are not shown but are obviously required for every application. These diagrams are shown as using the Romex wiring method. These Romex cables contain a ground conductor which is required for all applications as well. The ground conductors are always bonded together to insure the integrity of the ground path. If you are using metal boxes, the ground conductor must be attached to each box by using a threaded ground screw or provided attachment. The frames of the switches which have a ground screw are to be attached to the ground conductor as required.
Please contact me if you have any questions or comments regarding these diagrams.


4-Way Switching Diagram

This 4 way switch diagram #1 shows the power source starting at the left 3-way switch.





fourwayswitchdiagram2

This 4 way switch diagram #2 shows the power source starting at the fixture. The white wire of the romex going to the switch is attached to the black line in the fixture box using a wirenut. The white wire becomes the energized switch leg, as indicated by using black or red electrical tape.
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