I found out another bit of information from Dustin @ Panterra, that completely makes sense.
When plugging in your 50 amp cord, unreel it completely out of the bus, instead of leaving it on the reel inside the hot bus. Unreel it and lay the majority of the cord under the bus length wise, not coiled up like they do with extra Boat lines. This will maximize cooler cord temps.
A coiled electrical cord makes a magnetic field, which will also add to the heat of the line.
Noone ever told me this one but it makes perfect sense to me.
Gary S.