![electrical - How can I test a three-way switch to determine if it's working? - Home Improvement Stack Exchange electrical - How can I test a three-way switch to determine if it's working? - Home Improvement Stack Exchange](https://i.stack.imgur.com/8fgQK.jpg)
electrical - How can I test a three-way switch to determine if it's working? - 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)
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
![electrical - How can I test a three-way switch to determine if it's working? - Home Improvement Stack Exchange electrical - How can I test a three-way switch to determine if it's working? - Home Improvement Stack Exchange](https://i.stack.imgur.com/VgAJ3.jpg)