baseboard heater wiring?


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Old 03-27-15, 07:46 PM
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baseboard heater wiring?

I have three heaters on 20 amp double pole breaker. I noticed that one cable going to one heater was 14/2 wire, carrying l1 and l2 for 245 volts. A second cable (12/2) comes in at other end of heater and carries maybe l2 and maybe neutral. (neutral reads 12v when connected to either l1 or l2 of other cable coming into other end of heater)

The three heaters are connected. Heater says 17 amp 120/277 volt. I assume 17 amps would be total amps for all three heaters? Im also worried about 14/2 wire.
 
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Old 03-27-15, 08:50 PM
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Where are you located? I believe Canada allows a different rules and wire sizing for baseboard heating.
 
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Old 03-27-15, 10:11 PM
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14/2 wire in 20 amp breaker cct strictly forbidden
In canada but i guess not as dangerous as i thought.
The wattage was scaring me but this is 240v. Thanks for the help.
 
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Old 03-28-15, 04:25 AM
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I wasn't saying it was safe, just that I believe that the CEC differs from the NEC regarding baseboard heaters.
 

Last edited by pcboss; 03-29-15 at 06:04 AM.
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Old 03-28-15, 06:42 AM
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Fourteen gauge wire can work perfectly well in 240 volt circuits. But wire of any gauge needs to be rated for the voltage. Romex is usually rated for up to 250 volts or up to 600 volts.

The 14 gauge wire is limited to 12 amps for heaters and other continuous loads in both 120 volt and 240 volt circuits. At 240 volts that would be slightly less than 3000 watts total.
 
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Old 03-28-15, 09:48 PM
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Sorry, i was completely mistaken about canadian forbidding 14/2 wire on 20 amp circuit re fixed base heaters.
Apparently, it is permitted. Im getting dumber every day
 
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Old 03-29-15, 12:13 AM
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I'm extremely surprised that is ok under CEC code as it is not under the NEC here in the States.
 
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Old 03-29-15, 07:57 AM
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Romex is usually rated for up to 250 volts or up to 600 volts.
In all my years I have never seen romex that wasn't rated at 600 volts, but I haven't seen the Canadian varieties of NM cables.
 
 

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