I would avoid #2 as it takes five interconnects vs four.
The USB configuration also keeps the main cables closer together to avoid eddy currents from a high amperage loop. Same reason for keeping inverter cables tied together.
For more terminal space I would probably connect the solar & 24/12 converter to the opposite +&- from inverter.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,383 PostsLatest Activity: Apr 25, 2026