Wouldn't they be the same if it is resistive?
project super
- Thread starter project super
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- Licensed Electrician
Makes sense to me. I don't care. All that matters is the rating on the heater so the proper circuit can be installed.
Fairy 'nuff.
jumper
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Ah, those dohickeys. See them in boiler rooms.
kwired
Electron manager
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and the fan load is almost negligible on such units.
With 35 kW like the OP has the fan is still somewhat negligible but seems is usually just enough to make minimum size conductor jump a size then if the fan were not on the same supply as the heat.:blink:
35 kw @ 208 volts is 97 amps x 1.25 = 121 amp conductor needed. Can be on a 125 amp breaker. Now put a 5 amp blower motor on there and you will need to bump to a 150 amp overcurrent device, but this time can still use the same 1 AWG copper supply conductor.
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