220 switch

[swvega]

I'am wiring a 2hp 220 motor for the fan on my home built paint booth. I installed 10-3 wire. it has a red, black, white,and copper wire.I put red and black to hot on the braker, white to ground and not real sure what to do with copper.fan seems to run fine as I tied wire together where switch should be. How do I wire the switch? It looks like a regular house light switch but says 240 volts on it. Do I just put the reds on one side and blacks on the other and tie the whites together or what?

 

[pattenp]

The copper is for ground. The white is for neutral and is used if you need 120V. You need to use a double pole disconnect switch connected to the red and black. Switching one leg, either black or white with a single pole switch will work to turn the fan on and off.

 

[Torque1st]

Always use a double pole switch for a 220 circuit. Break both hot legs for 220 devices. Use the bare copper wire for grounding.