Baseboard Heaters

02-17-2008, 09:52 PM	#1
matrix733 Newbie   Join Date: Sep 2007 Posts: 26	Baseboard Heaters Is it code to run 4 or 3 500w (240v) baseboard heaters off one 22amp(two pole) rated thermostat on 12/3 romex? Thanks

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02-17-2008, 09:59 PM	#2
junkcollector Floor Sweeper   Join Date: Nov 2007 Location: Central MN Posts: 346	Baseboard Heaters A 20 amp circuit will easily handle 4 heaters of this size. (4x500w=2000w/240v=8.3A) A 15 amp circuit will suffice. Why the 12/3? The heaters are straight 240, so you only need 2 hot wires plus ground. 12/2 will work just fine. Be sure to reidentify the white as a "hot'' conductor.

02-17-2008, 10:13 PM	#3
chris75 Electrician   Join Date: Aug 2007 Location: Connecticut, Litchfield Posts: 2,015	Baseboard Heaters Quote: Originally Posted by junkcollector A 20 amp circuit will easily handle 4 heaters of this size. (4x500w=2000w/240v=8.3A) A 15 amp circuit will suffice. Why the 12/3? The heaters are straight 240, so you only need 2 hot wires plus ground. 12/2 will work just fine. Be sure to reidentify the white as a "hot'' conductor. Just a side note fixed electric heat must also be figured at 125%... so, (4x500w=2000w*125%=2500w/240v=10.41A

02-17-2008, 11:48 PM	#4
matrix733 Newbie   Join Date: Sep 2007 Posts: 26	Baseboard Heaters Thanks, I forgot that I did not need a neutral for the heaters.