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light switch has 3 wires

3 Way Switch Installation - YouTube
3 Way Switch Installation - YouTube

How bad is it if light switches are not connected to ground? :  r/homeautomation
How bad is it if light switches are not connected to ground? : r/homeautomation

How To Wire a 3-Way Switch: Diagrams and Instructions
How To Wire a 3-Way Switch: Diagrams and Instructions

3 Way Switch No Neutral - Very Confused Please Help - Wiring Discussion -  Inovelli Community
3 Way Switch No Neutral - Very Confused Please Help - Wiring Discussion - Inovelli Community

Three-Way Switch Wiring | How to Wire 3-Way Switches | HomeTips
Three-Way Switch Wiring | How to Wire 3-Way Switches | HomeTips

wifi - Connect 3 black wires to new switch - Home Improvement Stack Exchange
wifi - Connect 3 black wires to new switch - Home Improvement Stack Exchange

Switch with 3 wires and not a 3-way. Help - Connected Things - SmartThings  Community
Switch with 3 wires and not a 3-way. Help - Connected Things - SmartThings Community

How to Replace a Three-Way Light Switch - dummies
How to Replace a Three-Way Light Switch - dummies

I'm trying to replace a light switch (single pole) with a GE zWave switch.  I opened the switch and it has 3 black wires - can I use a Zwave switch that
I'm trying to replace a light switch (single pole) with a GE zWave switch. I opened the switch and it has 3 black wires - can I use a Zwave switch that

How to wire a light with two positive wires - Quora
How to wire a light with two positive wires - Quora

How to Wire a 3 Way Light Switch │ Legrand
How to Wire a 3 Way Light Switch │ Legrand

3-Way Switch Wiring: A Step-by-Step Guide - Bob Vila
3-Way Switch Wiring: A Step-by-Step Guide - Bob Vila

Single pole switch with 3 sets of wires? - DoItYourself.com Community Forums
Single pole switch with 3 sets of wires? - DoItYourself.com Community Forums

When wiring a three way light switch, load or line wite - Connected Things  - SmartThings Community
When wiring a three way light switch, load or line wite - Connected Things - SmartThings Community

Bought the new Amazon 3-way switch. How do I connect it to my old switch  wires? The book says the brown is the Traveler. Which of the blacks from  the old switch
Bought the new Amazon 3-way switch. How do I connect it to my old switch wires? The book says the brown is the Traveler. Which of the blacks from the old switch

electrical - Light Switch 3 black wires, one white, no ground - Home  Improvement Stack Exchange
electrical - Light Switch 3 black wires, one white, no ground - Home Improvement Stack Exchange

electrical - Single pole on/off switch with 3 wires - Home Improvement  Stack Exchange
electrical - Single pole on/off switch with 3 wires - Home Improvement Stack Exchange

Replacing switch: three black wires??? - DoItYourself.com Community Forums
Replacing switch: three black wires??? - DoItYourself.com Community Forums

3 red wire light switch | DIYnot Forums
3 red wire light switch | DIYnot Forums

wiring a lightswitch 3 red wires... | DIYnot Forums
wiring a lightswitch 3 red wires... | DIYnot Forums

Three-Way Switch Wiring | How to Wire 3-Way Switches | HomeTips
Three-Way Switch Wiring | How to Wire 3-Way Switches | HomeTips

3-Way Switch Wiring: A Step-by-Step Guide - Bob Vila
3-Way Switch Wiring: A Step-by-Step Guide - Bob Vila

electrical - Single Pole Light Switch 3 Black Wires - Home Improvement  Stack Exchange
electrical - Single Pole Light Switch 3 Black Wires - Home Improvement Stack Exchange

3 way light switch micro controller wiring - Connected Things - SmartThings  Community
3 way light switch micro controller wiring - Connected Things - SmartThings Community

How to wire a three-way light switch - YouTube
How to wire a three-way light switch - YouTube

Swap out those old crappy 3-way light switches for good - CNET
Swap out those old crappy 3-way light switches for good - CNET