Newbie Electrical Issue - Advice Needed Please

What is the voltage from the generator? If it's low, than low voltage equals high current (amps). Check the voltage at an AC outlet in the RV.

You got some good responses in this thread. Most of them are encouraging you to perform load management. That's the most obvious and likely problem. Once you are absolutely sure nothing else is contributing to the amp spike, you need to consider the AC unit itself has a problem.

Check out THIS thread of a forum member with a similar problem.