I went to a campground that had no breaker box at the site. I asked about it, and was told that the breakers were in a big box about 100 feet away. The problem is that if they fed several sites off a 50 amp breaker, I could have a 20 amp short in my trailer that could cause a fire without tripping a big breaker.
I digress, but a Japanese hotel burned down for this very reason. A small circuit got overloaded and started a fire because a big amp breaker down the hall did not have enough draw from the short to kick out.
So, anyway, I came home and installed a 15 amp breaker from h/d (about 8 dollars) in a homemade wood box in my tear... now any short I may have (or overload), it should protect me.