![Would a smart switch requiring neutral wire work in this box? North American, top 2 black and white were taped off. Only red is hot. Tried installing and no go. : r/smarthome Would a smart switch requiring neutral wire work in this box? North American, top 2 black and white were taped off. Only red is hot. Tried installing and no go. : r/smarthome](https://i.redd.it/ktpznyp23is91.jpg)
Would a smart switch requiring neutral wire work in this box? North American, top 2 black and white were taped off. Only red is hot. Tried installing and no go. : r/smarthome
How to tell if the black wire in a light switch is really hot and the white wire is really neutral - Quora
![electrical - Why are white/neutral wires connected together with the ground wire? - Home Improvement Stack Exchange electrical - Why are white/neutral wires connected together with the ground wire? - Home Improvement Stack Exchange](https://i.stack.imgur.com/2BUCO.jpg)
electrical - Why are white/neutral wires connected together with the ground wire? - Home Improvement Stack Exchange
![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 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](https://i.stack.imgur.com/AC3wn.jpg)