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Old 01-04-2014, 04:31 AM   #31
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Adding 1000/2000 w 240v heater to 15 amp 240v circuit running 1/2 HP well pump


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Originally Posted by isaacjames View Post
Thank you everyone for your time, I did learn a few things!
One more question, can I run 14/3 wire to my heater or do I stay the same and run 12/3. I have lots of 14/3 hanging around.
You only need 14/2 on a 15 Amp protected circuit. But you can use 14/3 or 12/3 and ignore the white wire.

BUT if you changed the breaker to a 20 Amp, you must use #12 wire.

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Old 01-05-2014, 03:18 PM   #32
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Adding 1000/2000 w 240v heater to 15 amp 240v circuit running 1/2 HP well pump


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Originally Posted by kbsparky View Post
You only need 14/2 on a 15 Amp protected circuit. But you can use 14/3 or 12/3 and ignore the white wire.

BUT if you changed the breaker to a 20 Amp, you must use #12 wire.
So all I need is the 2 hot leads? I havnt looked at the heater yet but I can ignore the one on the heater too if it has one.
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Old 01-05-2014, 07:16 PM   #33
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Adding 1000/2000 w 240v heater to 15 amp 240v circuit running 1/2 HP well pump


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Originally Posted by isaacjames View Post
So all I need is the 2 hot leads? I havnt looked at the heater yet but I can ignore the one on the heater too if it has one.
And the ground.

In a case like this, black and red are usually used, white is not.

The heater will have two leads to connect to either the thermostat or power if it has a built-in stat.
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Old 01-06-2014, 07:31 AM   #34
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Adding 1000/2000 w 240v heater to 15 amp 240v circuit running 1/2 HP well pump


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And the ground.

In a case like this, black and red are usually used, white is not.

The heater will have two leads to connect to either the thermostat or power if it has a built-in stat.
Ok great, thanks!

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