[NH_Bulldog]

You will have a few technical limitations to consider: the physical size of the panels and the mounting hardware. The presence or lack of presence of a suitable penetration on the roof for the upgraded wiring. The capacity of the existing wiring from the roof and the likelihood that it is insufficient for the higher wattage. You will need to upgrade the solar charge controller from the existing 15A. Increasing solar capacity by that much usually means you will be buying and installing an inverter and shunt.

It’s all doable, but likely will require a good deal of time and expense. I have been shopping for a new 5th wheel and was thinking I might get by with a SolarFlex 200 but when I looked into what it would take to upgrade to a 400 or 600 system myself, I decided to have the factory do it instead. I don’t see where we would be doing any longterm off grid camping, so a 400i system will probably meet my needs for the foreseeable future.