Technical research
Current 12 V system knowledge and future 48 V design work kept separate on purpose.
The project
The current camper system is documented as a real system. The larger 48 V architecture remains design and research work, not an installed upgrade.
A roughly 6 kW load is about 500 A at 12 V before losses and about 125 A at 48 V. That difference affects cable size, voltage drop, protection, busbars, heat and installation practicality. The 48 V design is not presented as completed work.
Start with what you need to achieve. I’ll help work out the right technical route.