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wiring - In a light switch, how can I tell if the black wire is really hot and the white wire is really neutral? - Home Improvement Stack Exchange
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electrical - Installing night-light switch on hot-neutral-ground circuit - Home Improvement Stack Exchange
![Replacing a single pole light switch. Beside the hot & load wire there is a 3rd black wire. It is not hot (tested after removing from switch). Confused what it is for Replacing a single pole light switch. Beside the hot & load wire there is a 3rd black wire. It is not hot (tested after removing from switch). Confused what it is for](https://preview.redd.it/replacing-a-single-pole-light-switch-beside-the-hot-load-v0-4ig7nna550n81.jpg?width=640&crop=smart&auto=webp&s=c9445c0c766ee027b2ce406e2153413737927723)
Replacing a single pole light switch. Beside the hot & load wire there is a 3rd black wire. It is not hot (tested after removing from switch). Confused what it is for
![Why Does My Dimmer Light Switch Feel Hot to the Touch? | George Brazil® Plumbing & Electrical | Phoenix, AZ Why Does My Dimmer Light Switch Feel Hot to the Touch? | George Brazil® Plumbing & Electrical | Phoenix, AZ](https://georgebrazilplumbingelectrical.com/wp-content/uploads/2019/07/b2e1_296_395_70.jpg)