[DutchmenSport]

If at all possible, don't park directly under the power lines if they are that close to the roof of your camper. Anything can happen (a storm at any time) and knock down that power line. You really don't want that thing draping over the roof of your camper. And you made a good point yourself too. If you, or anyone gets on the roof, the power lines are a real danger.

You will be getting on the roof an you will need to inspect it at least a couple times a year, looking for cracks in the caulking and sealing the cracks up. You will also want to occasionally wash the roof so dirt won't accumulate and black-streak the sides of the camper.

All the other advise is solid!