Brownleaf wrote:
afidel, are you insinuating that a 30 A hook-up is insufficient? My cord is a 30 amp. Doug
Depends how well insulated your RV is and how cold it is outside.
A 1500W electric heater puts out around 5000BTU/hr, and you can run 2 of them on a 30A circuit (assuming your outlets are on separate 15A breakers), so you'll get around 10,000BTU/hr of heating from those 2 heaters.
In 50 degree weather, one 1500W heater kept my 30 foot Class C comfortable, but below that I had to use the propane heater (which was rated at 30,000 BTU/hr). I don't know how well it would have done with 2 1500W heaters, but am guessing it would have been good to 40 degrees?
Keep in mind that with 3000W of heaters running, you're consuming pretty much all the power that 30A circuit can provide, so you can't run any other high drain devices, like a microwave, electric water heater, etc. Even your power converter might be too much load if the batteries are low on charge - a 60A charger will use around 6A of 120VAC to charge the batteries.