I’m looking at a standby electric generator for my house. I need 26 amps for the furnace, and another 10 for the fridge, microwave and computer. I think I can get by with a two cylinder motor, fired by propane. Fortunately, I have not been confronted with joules yet...
You need 26 amps just for the furnace? That seems awfully high to me (unless, of course, it's an electric one).