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2 black wires on light switch

Switch box - 2 black, 2 white, 1 red | DIY Home Improvement Forum
Switch box - 2 black, 2 white, 1 red | DIY Home Improvement Forum

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

Installing HS200 for a single pole light switch with 3 black wires -  TP-Link Community
Installing HS200 for a single pole light switch with 3 black wires - TP-Link Community

Wiring a Control with Two Black and One Blue Wire (Single Pole Application)  - YouTube
Wiring a Control with Two Black and One Blue Wire (Single Pole Application) - YouTube

electrical - Changing old light switch 2 black wires and 1 red - Home  Improvement Stack Exchange
electrical - Changing old light switch 2 black wires and 1 red - Home Improvement Stack Exchange

lighting - Light switch with one red and two black wires. Dont think it's a  three way - Home Improvement Stack Exchange
lighting - Light switch with one red and two black wires. Dont think it's a three way - Home Improvement Stack Exchange

Light switch only has two black wires. Can I add an outlet without white  (neutral) wire? : r/askanelectrician
Light switch only has two black wires. Can I add an outlet without white (neutral) wire? : r/askanelectrician

How to replace an old (1980s) light switch that has 2 black wires and one  red wire (plus ground) - Quora
How to replace an old (1980s) light switch that has 2 black wires and one red wire (plus ground) - Quora

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

How to wire a ceiling fan with 2 black and 2 white coming from ceiling -  Quora
How to wire a ceiling fan with 2 black and 2 white coming from ceiling - Quora

How to Wire a Light Switch — Steps for Both Single-Pole and 3-Way Switches
How to Wire a Light Switch — Steps for Both Single-Pole and 3-Way Switches

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

Installing New Wall Light Switch with 2 Black and 1 Red Wire to Single Pole  : r/askanelectrician
Installing New Wall Light Switch with 2 Black and 1 Red Wire to Single Pole : r/askanelectrician

Light switch short when switched up and is on when down. 2 black 1 red wire  : r/electricians
Light switch short when switched up and is on when down. 2 black 1 red wire : r/electricians

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

Two black wires for a switch
Two black wires for a switch

wiring - What's going on with this lightswitch (two wires to bottom  connect, not connected on top) - Home Improvement Stack Exchange
wiring - What's going on with this lightswitch (two wires to bottom connect, not connected on top) - Home Improvement Stack Exchange

Two black wires one red wire : r/askanelectrician
Two black wires one red wire : r/askanelectrician

wiring - Converting switched outlet with 2 black and 1 red for a smart  switch - Home Improvement Stack Exchange
wiring - Converting switched outlet with 2 black and 1 red for a smart switch - Home Improvement Stack Exchange

Blue Series 4 way with light in the middle wiring help - Wiring Discussion  - Inovelli Community
Blue Series 4 way with light in the middle wiring help - Wiring Discussion - Inovelli Community

3 way switch setup - Wiring Discussion - Inovelli Community
3 way switch setup - Wiring Discussion - Inovelli Community

What's the purpose of this looped black wire on my single pole switch?  Trying to install a in wall timer switch that requires 3 wires :  r/askanelectrician
What's the purpose of this looped black wire on my single pole switch? Trying to install a in wall timer switch that requires 3 wires : r/askanelectrician

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