![electrical - Can someone tell me what/how there are 4 wires on one switch and if they're necessary? - Home Improvement Stack Exchange electrical - Can someone tell me what/how there are 4 wires on one switch and if they're necessary? - Home Improvement Stack Exchange](https://i.stack.imgur.com/H0Ui8.jpg)
electrical - Can someone tell me what/how there are 4 wires on one switch and if they're necessary? - Home Improvement Stack Exchange
![electrical - How do I wire up a 4-wire dimmer switch when I only have two 2 wires from the wall? - Home Improvement Stack Exchange electrical - How do I wire up a 4-wire dimmer switch when I only have two 2 wires from the wall? - Home Improvement Stack Exchange](https://i.stack.imgur.com/nNPBr.png)
electrical - How do I wire up a 4-wire dimmer switch when I only have two 2 wires from the wall? - Home Improvement Stack Exchange
![wiring - Why do I have 4 brown (live wires) in my light switch - and no blue (neutral) - Home Improvement Stack Exchange wiring - Why do I have 4 brown (live wires) in my light switch - and no blue (neutral) - Home Improvement Stack Exchange](https://i.stack.imgur.com/VVWC1.png)
wiring - Why do I have 4 brown (live wires) in my light switch - and no blue (neutral) - Home Improvement Stack Exchange
![My smart switch has 4 wires coming from it: a black wire, a blue wire, a white wire, and a green wire. My wiring in the installation spot is black, white, and My smart switch has 4 wires coming from it: a black wire, a blue wire, a white wire, and a green wire. My wiring in the installation spot is black, white, and](https://i.redd.it/tq1qzdy4e7g11.jpg)
My smart switch has 4 wires coming from it: a black wire, a blue wire, a white wire, and a green wire. My wiring in the installation spot is black, white, and
![4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community 4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community](https://global.discourse-cdn.com/smartthings/original/3X/6/d/6d96c098b2f1fb5accaa4b1373368da6996e1b92.jpeg)