I don't find that odd at all. As I said, I take my 10001 and use it with a surge protector (and always unplug it when I'm done) as long as we are running on regular electrical from a campground. Due to my husband's job, sometimes we go a few weeks running off the generator, and I am not risking an expensive computerized machine on power that is inconsistent. I'm glad you haven't had a problem, but as the saying goes, "it just takes once", and I doubt that is covered under your warranty.