not to degrade the quality of that inverter, but there is no way its 1000 watts with a single 35 amp fuse in it. The SPI500 and SPI1000 don't have it listed on Stingers website as to their fuse rating, but I have an SPI500 and I'll check what the fuse in the side of it is as soon as I find it. I'm thinking it is a 40 amp fuse though, which is about right for its ratings.