I noticed our electric furnace(non heat pump) resistance heat has 2 breakers in the outside panel, one 60 amp and one 30 amp. And there are the same size 2 breakers on the furnace(a handy disconnect I assume). The 60 amp(on the furnace) feeds 3 terminals, one with 3 black wires and one with 3 red wires. The 30 amp(on the furnace) feeds 2 terminals, one white and one blue wire. I happened to notice after the 1st winter in the house that the 30 amp breaker was turned off at the outside panel. This winter I flipped it on, but didn't really notice any difference in the heat. Just wondering what exactly the 30 amp is for? Because when it's off, everything seems to work okay. Is it a backup or what do you think? Thanks very much for any comments.