This electrical wiring question came from. How 3 way and 4 way switch circuits work controlling a light with two or more switches.
4 Way Switch Wiring Diagrams Do It Yourself Help Com
3 way to 4 way switch. A 3 way switch is used on each end with one or more 4 way switches in between the two 3 way switches. These 3 way occupancy sensor switches may replace the existing 3 way switches. Controlling a light with three or more switches. How do i wire the 4 way switch with the 3 way switches. 2 wire cable runs from the light to the first switch and then 3 wire is run between all the switches. In order for a 4 way circuit to work the 3 way switches must be wired properly at the beginning and end of the path.
See more about home wiring for maryland. Understanding 4 way and 3 way switch wiring electrical wiring. I have a 4 way switch wired to 3 way switches and the light from the 4 way switch. There is one basic difference between the 3 way switch and the 4 way switch and that is the number of terminals in the switch. Connect the returning travellers from the new switch box location red and white and connect them to the in or the out terminals on the new 4 way switch. This page describes how to use 3 way and 4 way switches to control lights.
These two wires are the travelers to the 4 way switch. Connect the black wire of the new 3 wire cable to the common screw of the 3 way switch that you will move to the new location. For 4 way switch wiring you will need two 3 way switches one at each end and then as many 4 way switches as you want in between. Attach the black wire and white marked with blue wire going out of the box to the next switch to the bottom poles of the 3 way switch. The travelers from one 3 way can be wired to either terminal in a pair but dont mix up the pairs on the 4 way or the circuit wont work properly. For more than two switches one or more 4 way switches are added.
In case of a 3 way switch you can control the lights from two different places. If the box will remain permanently accessible and with a blank cover plate then all you need to do is connect the common wire on the 3 way to either one of the travelers cap off the other traveler and leave the 4 way switch alone. 4 way switch configurations are used to control lights with three or more switches. Install a 4 way occupancy sensor to replace the existing 4 way switch. With 4 way switches you can control them from three places. Mike a homeowner from arnold maryland.
At the light the black hot wire will pass right through going to the first switch. The third wire the red will not be switched at the 4 way location but passes to the final 3 way switch. The sensing pattern should be adjusted as wide as possible and the time delay should be adjusted to provide enough time to travel the full distance of the stairway.
Gallery of 3 Way To 4 Way Switch
