Ok have more time today. So can type the stories
Nice "New" (less than 10 years old) park All bright and shiny still plugged into 50 amp and even though I was doing the deep dive on energy conservation the breakers were trip-a-matics.. Well In resetting them I noticed the box was HOT. I mean burn your fingers hot.. Called security and ask for an electrical tec with new breakers. THe breakers were so hot he had to use gloves when he pulled them put in new ones closed up the box and the old ones were STILL too hot to handle w/o gloves.. They were toast (In fact toast is not that hot)
Manager tried to convince me it was all those big 50 amp rigs plugging into 30 anp breakers (Seems he's an electrician. .I'm an electronics technician .. Kind of out ranks him).
Except it was the 50 anp breakers on a 50 anp site and I don't use but 30 of those 50 amps (I use 30 on both legs though).
30 amp park.. I heard arcing as I reset the breaker for the umpteenth time
Breaker/buss bar connection inside the box was burned up.
So Breakers do fail
I've had other failures as well
But Breakers DO fail for a fact.. I mean why would the park (Every park I've ever been in) keep spares in stock if they do not fail?