Iwire...as for the ground rod...the RV would (I guess) be the cord and plugged connected equipment in this case...and the RV power supply that I am installing for suppling power to the RV would be similar to a sub-panel installaton at a remote building, which would require a seperate ground rod if it contained more than one branch circuit as specified in 250.32
It is my understanding that the intention of the groundrod is to help disperse a potential lightning strike.I understand that this is not a remote building, but I think that a ground rod would help divert a lightning strike to earth more effectively than none at all. Does the code prohibit the use of a ground rod for this RV power supply installation anywhere??? I'm just trying to do an installation that is above the requirements of the code.