2 120 v wires to 240 v wall heater


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Old 04-28-18, 04:41 PM
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2 120 v wires to 240 v wall heater

I am replacing 2 baseboard heaters, the first was supplied by two 120 v 12/2 wires from a 20 Amp double breaker, the second, one 12/2 wire from the first heater. can I use the same 2 wires to supply one 240 V 3000 Amp wall heater?
 
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Old 04-28-18, 05:26 PM
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I am replacing 2 baseboard heaters, the first was supplied by two 120 v 12/2 wires from a 20 Amp double breaker,
No, but a common misconception. It was supplied by both legs of the 240 volts supplied to your house.

can I use the same 2 wires to supply one 240 V 3000 Amp wall heater?
That would be 3000 watts not amps. Yes, if only one heater.
 
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Old 04-28-18, 06:00 PM
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Thanks, any idea why they would only run one 120 to the next heater it was the same length baseboard ? yes I meant to say watts
 
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Old 04-28-18, 06:04 PM
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Usually 120vac heaters are shorter and much lower wattage.
A 120vac heater would have to be under 2000w on a 120v circuit.

From your description of wiring.... both heaters are 240vac.
 
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Old 04-28-18, 08:31 PM
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I suspect you mean there were two cables in the one heater but only one in the second heater . That would be the end of the run. The first heater had power in and power out to the second baseboard .
 
 

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