Grand Design Solitude ST310GK
System Schematic

Basic Parts List
- 3 - Battle Born 100 Ah 12V LiFePO4 Deep Cycle Battery
- Victron Energy MultiPlus II 2x120 12/3000/120 Inverter with Charger
- Victron Energy VE.Bus Smart Dongle with Bluetooth
- Victron Energy Lynx Distributor
- Miscellaneous Victron Mega Fuses
- Victron SmartSolar MPPT150/70 Solar Controller
- Victron Energy BMV 712
- Miscellaneous Victron Energy RJ45 UTP Network Cables
- 2 - Victron 150 Amp Bus Bars
- Blue Sea Systems HD-Series Heavy Duty On-Off Battery Switch
- AM Solar Roof Combiner Box with Strain Relief
- 3 - REC 365 Watt Solar Panels with adjustable Z-bracket mounts
- 12 Feet of 4/0 Welding Cable – Red
- 13 Feet of 4/0 Welding Cable – Black
- 20 Feet of 4 AWG Welding Cable – Red
- 14 Feet of 4 AWG Welding Cable – Black
- 2 Feet of 6 AWG Bare Solid Copper Wire
- 8 Feet of Portable Cord Soow 6/4 6 AWG 4 Conductor
- Red and Black Dual Wall Shrink Tubing
- Various 4/0, 4 AWG and 6 AWG Tinned Copper Lugs
- Miscellaneous parts, sealants, and connectors
- Midnite Solar Baby Box Enclosure with DIN Rail Mounting System
- Midnite Solar MNEPV Series DIN Mount DC Breakers (80 amp & 40 amp)
Installation Notes
This installation was completed in July of 2023. The owner of this 5th wheel contacted me in 2022 regarding a possible installation and we worked out a system design, but due to circumstances out of the owner’s control we were not able to complete the system. The owner contacted me again in 2023 to move forward with the system installation. The RV already had two Battle Born 100 amp hour batteries and a BMV-712 battery monitor, but nothing else. Originally, the owner wanted to start small and then grow the system over time. We were originally going to use the existing two batteries, add two 365 watt solar panels and a Multiplus II 2×120. This was intended to get the owner up and running with a system he could use and then expand later. When the owner dropped his rigg off, he asked me to add a third solar panel, a third battery and a Cerbo GX with display to the system. I was happy to add the additional equipment for him during the installation.
The system installation went fairly quickly due to the fact this was the seventh time I have installed a similar system in this particular Grand Design floor plan. I really like this floor plan, both for its livability and for the available space it has for system installations. The owner had made some minor modifications to the basement rear wall. I took advantage of these existing modifications and incorporated them into the new installation. This allowed for an access door in the rear basement wall that can be easily opened to get to the new equipment and other OEM equipment.