in the past 14 months i have had to replace the 30A plug that plugs into the rv parks box at least 3 times because 1 of the prongs overheats and melts my plug. need ideas on what might be the cause
If it's the same pedestal plug I agree with Flute and cavie. I've seen the same thing with automotive headlamp plugs. You notice the terminals on the headlamp bulb are burned so you get a new bulb. But the female part that the terminal goes into is burned just as badly. If you don't replace both parts it just repeats the damage over and over.