You have a dealer looking out for you, and I highly recommend a surge protector. In the last four years, I've had 8-10 brownouts (low voltage), one over voltage, and a miswired pedestal.
Just a matter of luck whether it will happen to you or not. Oh, and half of these were on a campground we regularly visit, other half were just campgrounds that we've been to once.
Go to Progressive Industries website and get an internal 50a with the LED display. You will be so glad you did. You'll be surprised how much one leg varies from another, where voltage goes during peak demand, etc.
Richard White
2011 F150 Ecoboost SCREW 145" 4x4
Firestone Ride-Rite Air Springs/Air Lift Wireless Controller
2006 Sportsmen by KZ 2604P (30')
Hensley Arrow