How Big Is Your Solar System

I have been looking into building out a 30ft cargo trailer and making it a camper with solar. I am still in the research phase and have been looking into solar systems. The system I have been looking into is a 2,400W 120V/24V DC. Here is the link to this system. https://shopsolarkits.com/products/remote-solar-power-kit-rpk-plus . My question to you is how big of systems are you running for your homes?