Do battery cutoffs and auto-reset breakers ...

joebedford wrote:
I put a brand new battery in my rig but this morning 20 minutes of furnace dropped the voltage enough that the main circuit breaker tripped then reset a few seconds later.

Did you prep this new battery by putting it on a charger before installing it? WHAT circuit breaker? If 120 vac then it would seem your converter was running full tilt trying to charge a depleted battery while also trying to supply sufficient power to run the furnace. You need to be more specific. ;)