We draw the absolute maximum from our 25KVA when we use it. That's 100 amps/250V. We should have a 50 KVA for proper backup to allow normal motor starting instead of having to do sequential starts all the time and shutting half the farm off. When you add up a 4 horse compressor, a pair of 1/2 horse fan motors, 2-1/2 horse pump motor, and various other resistive loads that add up to the 100 amp mark or very close to it. It's often the well pump cutting in that trips the breaker on us if I forget to shut it off. That 25KVA electrical load is equivelant to 37 hp load. If you figuered a drive efficiency of 85%, a fairly typical figure in many drive systems.... That puts you at 43 HP required to drive that 25KVA... so yes, that's pucking my 45 horse pretty hard considering the tractor probably doesn't make quite that power at 540. The 52 HP might, but it's still running at full power. I'm not saying that our generator is highly efficient. It's an 1800 RPM, model MAGNATE MKII made by N.J. Fromnet.
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