What did you do to your Class C MH today???

Went to Lake of the Ozarks to visit sister and her husband. My sister and I stayed at the Osage Beach Rv Park, in Osage Beach, MO. On Sat. afternoon we came by the C to pick up some stuff to take to my sisters place. Open the door and the a/c was off, in fact no power. The main breaker had tripped. HHHHHHHMMMMMMMMM. When I open the panel door it was very warm. Reset the breaker and all was well.Well Sun. afternoon we all were at the C, in the afternoon and the breaker tripped again. HHHHHMMMMMMM. Again the panel door was really worm, maybe even hot.The breaker was hot. Back home got into it and the son in law, he is my eyes, found that two of the prongs on the shore power cord were very loose.to the point for one of them, you could just about pull it out.
So a new shore power cord was installed. Decided to replace the breaker also, since the breaker heated up numerous times. For less than 20 bucks a new breaker. All is well now.:)