Stayed 2 weeks in Floirda. With the 30amp plug with just AC and one other appliance (fan) kept tripping breaker.
So, because the power pole 30A breaker kept tripping, you assumed that hooking to the 50A supply would solve your problem? You melted your dogbone because you continued to draw more than 30A thru the power cords with no over amp protection. The 30A main breaker in your coach should have tripped, but didn't - I would get that checked out before worrying about the dogbone.
BTW, you probably had more units drawing power than mentioned; i.e., Fridge, HW heater, TVs, hair dryer, microwave, toaster, coffeemaker, etc.
