Originally Posted by Longhorn 105
Is an electrical surge protector really necessary for a 5th wheel or does it depend on the campground locations?
Yes, and Yes.
A 5er contains several thousand dollars in electronics: fridge, TVs, microwave, space heater (ours is a fake fireplace), one or two A/C systems, maybe a washer/dryer, central vacuum, and the converter plus whatever you have plugged into the receptacles. The loss of some of that stuff will ruin/cancel your trip. Damage can happen to any site power pole, or it can be from lightning. Even reputable campgrounds can have damage or get bad repairs from an electrician or handyman.
Like HONDAMAN, I installed a Progressive Industries EMS-HW50C. It was one of the first things I added.