Posted by Steve@Advance on November 13, 2014 at 20:37:39 from (107.203.134.67):
In Reply to: electric question posted by vscummins on November 13, 2014 at 20:22:50:
Since it's a resistive load, you can run it on #14, but you will loose considerable heating capacity. Here's what I got running the voltage drop calculator.
Results
1 conductors per phase utilizing a #14 Copper conductor will limit the voltage drop to 6.75% or less when supplying 12.5 amps for 300 feet on a 120 volt system.
For Engineering Information Only:
15.0 Amps Rated ampacity of selected conductor
2.9495 Ohms Resistance (Ohms per 1000 feet)
0.058 Ohms Reactance (Ohms per 1000 feet)
24.0 volts maximum allowable voltage drop at 20%
20.099. Actual voltage drop loss at 6.75% for the circuit
0.9 Power Factor
So, with #14 wire,you'll only be getting 1250 watts of heat out of it. It will work, but not as well. If you think you need the full 1500 watts, you'll need to go all the way up to #10!
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