I am by no means a power expert. I do know that we do a load test on our 3 gensets once a year. The largest one is 1.025 Mw. I think the main reason is load up the deisel and make sure it is operating properly.

Other than my once a month 10 minute test, I call in in the generator service company if there is any problem. WE just spent 3 day in 0 degree F pumping cleaning and refilling the fuel tank that had been filled with contaminated fuel somewhere onlong the line.

Good luck with your test.