Dont overcomplicate the electrical. Make as much stuff 12 volt DC as possible. Find a TV that uses a dc power supply (my Samsung was DC powered through a small brick), along with any other accessories you can. They even have 12v appliances (albeit probably either really cheap, or really expensive)....have all your lighting be 12v DC LED. Use USB sockets for chargers, or CLA adapters, and never look back. If you run 120volt (for ac, big battery charger etc), the have a shore power plug that feeds a master electrical box with a switch. Have your charger plug into that, as well as a surge protector that houses your other devices. You can take the 12 volt AC-DC power supply from the TV (or a larger 5 or 10 amp power supply), and put it on the surge protector, and wire a socket or andersen connector to your 12 volt fuse block. it can supply power to the 12volt system while connected to shore power, and be disconnected or shut off if using batteries. If running an inverter, you can move the surge protector from the master box over to the inverter and back as needed. Keep the charger plugged in ONLY to the shore power outlet. That way, it will charge your batteries when connected to shore power (whether RV campground hookup, generator, house power, etc). Wire in whatever solar supply you put together, directly to the batteries.