jbfan, One thing I was not clear on your UPS. Is the UPS rated 300 KVA output or input?
I did some checking on various UPS manufactures with 300 KVA output, and they all require an input from 440 KVA to 470 KVA.
Taking the highest of 470 KVA multiply by 1.25 gives you a 588 KVA generator to handle a 300 KVA output UPS.
Even if your UPS is rated 300 KVA input, a 300 KVA generator falls short. 300 x 1.25 = 375 KVA generator. And that may fall short if the UPS does not have a walk-in feature built in.
Dereck
