Installing a 220-volt outlet isn’t all that hard at all. Following the instructions in my video and you’ll be fine.
So here’s the deal on installing more than one per circuit. It’s all math by the way, oh yeah, and lots more money. If you have 2 220 outlets and each one is 20 amps. You’ll need to use #8 wire for the whole circuit including a 40 amp breaker. Now just the wire alone is going to cost you. So yes you can, but do you really want to?
A big misconception is that you can only install one 220 volt device/outlet per circuit/breaker. Although you’ll better off for every 220 devices/outlet having it on its own breaker.
In the below diagram you will notice that for a 220-volt outlet you would need a two-pole breaker. What this means is that the breaker will take the power from the panel by the two very different phases. Each one is 110 volts. Combined you have your 220 volts. However, you will still need ground as you can see. Some need a neutral as well. Most of the time these would be things like your stove. But for now, this pretty much covers a simple 15 or 20 amp 220 volts.
The wiring needed for this type of insulation you would use 12/2 wire for a 20 amp installation.
If you’re looking for instructions on how to install a 4 wire 220 outlet see this video
The red wire is really just red for the picture. If you’re using a 12/2 wire you would simply just use the white and the black wires to power the outlet and the bare copper for the ground that I show here in brown. Don’t think you can just use two separate breakers. It just doesn’t work that way.
This setup does not use a neutral wire. The neutral wire is a return path back to the transformer, in other words, a balanced. More reason why you can’t add more than one 220 outlets per breaker. And this is considered a two-wire setup.
You may like to read my how to wire a clothes dryer using 4 wire. This setup uses the neutral wire. Click here
Don’t forget to look at how to wire a 4 wire 220-volt outlet.