Combo 3 Way Switch Wiring Diagram. Either, your outlet will turn on and off with the switches, or Once the box/relay combo is installed and mounted, I'd then wire it up -- all grounds go together of course (box pigtail, switch pigtail, and all three cable grounds). There are white wires that are twisted together, covered with wire nut.
They are always installed in pairs and use special wiring connections.
The three-way switch is a variation of the standard single-pole switch, which controls a light only from one location.
Three-way switches allow for controlling a light fixture from two separate locations, these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room. According to job specifications, the boxes in this demonstration are. From Wikimedia Commons, the free media repository.
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