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Easy to understand 3-Way-switch-wiring diagrams
The 3-way-switch-wiring diagram is useful for seeing how things are wired.You can see how we use 12-3 Romex for 3-way circuits. Run 12-3 Romex from the first switch, to the light, then on to the next switch.
A picture is worth a thousand words, but this pic is kind of fuzzy, so here's the thousand words:
- At the first switch, tie the white neutral wires together.
- Tie the copper ground wires together.
- Attach the red traveler wire to the travel terminal.
- Attach incoming black wire to the bottom switch terminal.
- Attach outgoing black wire to the top switch terminal.
- At the light fixture tie the copper wires together.
- Attach the red traveler wires together.
- Code outgoing white wire hot by painting it black.
- Connect incoming black wire with outgoing white wire that's coded hot.
- Connect the white and black wires to the corresponding wires on the light.
- Now on the last switch, connect the ground wire to the green ground screw on the switch.
- Connect red traveler to traveler terminal.
- Connect white wire coded hot to the switch's top terminal.
- Finally, connect black wire to bottom terminal screw.
3-way-switch-wiring
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