Had that happen this weekend at Old Millstream Campground in Lancaster. The 50A wasn't working and they were supposed to be working on it. Went up to a friends campfire and when we returned there was no electric to 4 sites. The electrician left and said it was an underground short. Sounds funny in the fact the 30a worked fine until they started working on it then there was no power and no chance of getting any. I had to go to the office and asked for another site. There was no sorry please find a site that suits you. Then because they didn't log me into the new site they came and told me I owed them for a night's site fee. I told them not to expect it. Nicely of course.