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Electric heaters, how many circuits?

4759 Views 5 Replies 3 Participants Last post by  Richo
I am looking to install 2 1500W 240V electric heaters in a basement. I'm going to use 12 gauge wire for each heater but here's my question:

I'm aware that 12 gauge is good for up to 20 amps @ 120V but if you are using 240V, does that mean you can go up to 40 amps and run both of these heaters off the same circuit/wire? And if so, would I use a 40 amp double pole breaker?

If they need to be run on separate circuits, do I just need a 20 amp double pole breaker for each heater or 40 amp?

Thanks for your help.
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Thanks! I was hoping that I could save on extra length of wire and an extra breaker. I appreciate your help!
Each heater will be controlled by its own line voltage thermostat so I will want them to run independent of each other.

I had a simple electrical class many years ago and learned about Ohms law, etc...just had been a while so I wanted to make sure I had it right before I proceeded.

Thanks for your great advice.
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