Hi Lady Fitz,
Thanks for the link. I'll read it carefully.
22 amps @ 240 volts--but I believe (or I hope) it is balanced between the 2 120 volt "legs". So wattage is 5280 and btu's are 18016 giving a total daily maximum output with no voltage drop of 432384 btu's.
I see the 50 amp ones are balanced--but the biggest is only 21.6 amps
That means a few less watts and a few less btu's
21.6 @ 120 x 2 = 5184 watts = 17688 x 24 = 424512 btu's per day with zero voltage drop.
I'm not terribly familiar with voltage drop on 50 amp units. Is it an issue from time to time?