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light switch with three black wires

wiring timer switch - three black wires - DoItYourself.com Community Forums
wiring timer switch - three black wires - DoItYourself.com Community Forums

electrical - Three way switch with two common wires? - Home Improvement  Stack Exchange
electrical - Three way switch with two common wires? - Home Improvement Stack Exchange

wiring - Why does single pole light switch have 3 wire cable when source is  at the switch? - Home Improvement Stack Exchange
wiring - Why does single pole light switch have 3 wire cable when source is at the switch? - Home Improvement Stack Exchange

Why does this light switch have three black wires? : r/homeautomation
Why does this light switch have three black wires? : r/homeautomation

Confused about 3 way switch wires - Connected Things - SmartThings Community
Confused about 3 way switch wires - Connected Things - SmartThings Community

Installing GE Aux Switch (2 red, 1 black wires) - Devices & Integrations -  SmartThings Community
Installing GE Aux Switch (2 red, 1 black wires) - Devices & Integrations - SmartThings Community

Identifying Wires on Your Old Switch – Brilliant Support
Identifying Wires on Your Old Switch – Brilliant Support

Confused about 3 way switch wires - Connected Things - SmartThings Community
Confused about 3 way switch wires - Connected Things - SmartThings Community

Light switches have 3 black wires and 1 grounding wire coming to the box.  Two of the black wires are twisted together.
Light switches have 3 black wires and 1 grounding wire coming to the box. Two of the black wires are twisted together.

Three black wires? One in bottom right push-in slot; one in bottom right  screw; and one in top left push in slot. I'm replacing it with a modern,  screws-on-the-side, rocker switch. How
Three black wires? One in bottom right push-in slot; one in bottom right screw; and one in top left push in slot. I'm replacing it with a modern, screws-on-the-side, rocker switch. How

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

DIY-er here trying to install dimmer light switch. Got 3 black wires on the light  switch, do I just connect them all together with WAGO and then the green to  the ground?
DIY-er here trying to install dimmer light switch. Got 3 black wires on the light switch, do I just connect them all together with WAGO and then the green to the ground?

Can't figure out this switch. Have 3 black wires instead of regular 2. -  TP-Link Community
Can't figure out this switch. Have 3 black wires instead of regular 2. - TP-Link Community

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

Why does this light switch have three black wires? : r/homeautomation
Why does this light switch have three black wires? : r/homeautomation

walls - Two light switches and three black wires - Home Improvement Stack  Exchange
walls - Two light switches and three black wires - Home Improvement Stack Exchange

Wiring a Single Pole Switch - Wiring a Switch - Conduit - YouTube
Wiring a Single Pole Switch - Wiring a Switch - Conduit - YouTube

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

Single Pole Dimmer Switch Confusion | DIY Home Improvement Forum
Single Pole Dimmer Switch Confusion | DIY Home Improvement Forum

electrical - Changing a Dimmer to Single Pole with Three Black and Three  White Wires - Home Improvement Stack Exchange
electrical - Changing a Dimmer to Single Pole with Three Black and Three White Wires - Home Improvement Stack Exchange

electrical - Two switch with three black wires - Home Improvement Stack  Exchange
electrical - Two switch with three black wires - Home Improvement Stack Exchange

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

Why is my light switch wire like this with the extra red wire, and why are  there more white wires in the wall not going to the switch :  r/askanelectrician
Why is my light switch wire like this with the extra red wire, and why are there more white wires in the wall not going to the switch : r/askanelectrician

Why does this light switch have three black wires? : r/homeautomation
Why does this light switch have three black wires? : r/homeautomation

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