Weird. I didn't go through whole thread so someone else may have already suggested there but a very important test when you find you used a shit ton of power and like you did is to turn everything off. I mean everything. Then see if you're still spinning. If you are then power theft or something similarity serious is happening. It's a quick but important step.... And next is to buy a kill-o-watt on amazon or eBay. Great to have to find out if some our appliance is inefficient. Pretty important if you gotta pay almost 40 cents per kWh which is so brutal.