Hate to bump an old thread, but I read the SD Max manual, and was wondering why the heck 60 Amp service meant (1) only 48 A power was available and (2) you could only run the heater and two pumps.
Now that I see the NEC code limit is 80% of max, the clouds lift!
Of course, selling things where you can't run all the options at the same time seems a bit misleading, but, OTOH, when would you really run the heater and all *three* pumps? (The things you learn here!)
I'm gonna keep on reading old posts until I can't take it any longer and am sure I'm not making a mistake with a SD Max.