I have a 30.2 and use a 20A circuit all the time while parked next to my home. The only thing i can't do is run both air conditioners at the same time. I even upgraded my batteries to 2 100AH lithium phosphate that pull 84Amps DC when charging and don't have a problem.
My coach also had a HDMI cable that went from one side by the door to the dinette TV on the slide that did not work. I bought a cheap HDMI tester and found some of the wires were shorted together. My guess is that somewhere there is a screw that was driven right through the cable. The only way to find it would be to open up the walls and trace the cable. No way was i going to let someone at the RV dealership do something like that. I ran a new line, mostly hidden.
__________________
|