Thank you so much for writing.
I know Ohm's Law pretty well. Most assuredly amperage goes down when voltage goes up; that's why generating stations send electricity out at such high potentials. I was just going by the readings I was taking. Each machine is pulling about 10 amps at 277 volts; that's 2700 watts.
And too I know one isn't supposed to max a 20 amp breaker, much less a 400 amp breaker. Schools in on the harmonics thing; I have no experience with that, but I'm a quick study. Hell, I've been working on gravity for 30 years and I've got half the secret, but this isn't the forum for that.
Email me and I will reveal it. email@example.com