Lots of people are relying on a auto former to protect them. The problem is they only improve voltage by about 10% and they don't shut off if the voltage gets to low. I would recommend you get a Southwire Surge Guard and put it after the auto former. My Surge Guard saved me at least 3 times last year from bad power in campgrounds. The nice thing about the Southwire Surge Guard is it will turn on automatically if the power improves.
2008 Newmar Mountain Aire
450 HP Cummins ISM 4000MH Allison Trans.
Towing a 2014 Honda CRV with a Blue Ox tow bar.