You are welcome to run multiple things at once. Just keep in mind what you are running and what type of hookup you are on. 50amp or 30amp or just 15amp to charge the batteries.
50amp—you are pretty much free to run whatever you want at anytime.
30amp—If you have 2 AC’s, only run 1 at a time. You can run the microwave and AC at the same time but much else and you are likely to dump the breaker. Just know what’s running so you don’t have issues.
15amp—The most basic. This for charging batteries. Running the lights. But that’s about it.
