Smart Switch 3 Way Wiring Diagrams. The three-way switch is a variation of the standard single-pole switch, which controls a light only from one location. When working with three way switches.there is no left side wire or right side wire or top or bottom wire there is ONLY one constant. there is one screw.
When working with three way switches.there is no left side wire or right side wire or top or bottom wire there is ONLY one constant. there is one screw. It's thorough; easy to follow, wire by wire; and it includes full-color diagrams. Click diagram to view full size.
All those switches, terminals and wires can confuse experienced electricians, let alone novice DIYers.
Three-way switches often control one light fixture at both ends of a hallway.
You know the drill- one turns on the light, the other one will turn off but then the first one wont turn back on unless the other one is switched, etc. 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. It's thorough; easy to follow, wire by wire; and it includes full-color diagrams.
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