Since the whole campground went dark, presumably it was the main breaker. The branch circuit must be sized to the outlet type, but the total rating of all branch circuits usually exceeds the main breaker rating.
Since the whole campground went dark, presumably it was the main breaker. The branch circuit must be sized to the outlet type, but the total rating of all branch circuits usually exceeds the main breaker rating.
That would be a reasonable explanation if most of the campsites had people charging EVs at their max individual current, but it sounded like just one did.