Looking for advice on a surge protector for our 5th wheel. It’s a 50 amp system. There are a lot of them out there from under $100 to over $300. We have had expensive problems at the campground we stay at for our county fair. Two years ago my inverter started on fire. Last year we lost the tv microwave and digital converter. I found one leg at 116 volts and one at 98 volts last year. The owner told me no one else has had a problem on this site. So I guess I need to protect myself.