Make sure: it outputs the correct voltage (110v or 240v), requires the correct input voltage (12v or 24v) and is a pure sine wave version if you’re running electronics
Inverters convert DC current to AC. AC current can harm (or even kill), so it’s best not to mess up the installation. Grounding your RV inverter is critical to your safety.
The manufacturer’s instructions will indicate the correct fuse size, and you should follow their guidance. If the manufacturer doesn’t choose an alternative brand.
The manufacturer’s instructions should also dictate the correct wire sizes to use over specific distances. Aim to use the largest wire size to reduce voltage losses.