Grand Design Solitude ST310GK
System Schematic

Basic Parts List
- 4 - Battle Born 100 Ah 12V LiFePO4 Deep Cycle Battery
- Victron Energy MultiPlus II 12/3000/120 Inverter with Charger
- Victron Energy VE.Bus Smart Dongle with Bluetooth
- Victron Energy SmartSolar MPPT 150/100 Charge Controller with Bluetooth
- Victron Energy Lynx Distributor
- Victron Energy SmartShunt
- Victron Energy Cerbo GX Communication Center
- Victron Energy GX Touch 50
- Victron Energy GX Touch 50 Wall Mount
- Miscellaneous Victron Energy RJ45 UTP Network Cables
- Miscellaneous Victron VE.Direct Cables
- Miscellaneous Victron Energy 32 V MEGA-Fuse for 12 Volt and 24 Volt Systems
- 8 - Hightec 215 Watt 36 Cell 12 Volt Nominal Solar Panels
- 32 - Aluminum Solar Panel Z Brackets w/ Stainless Steele Hardware
- Roof Combiner Box with Strain Relief
- MC4 Male/Female Solar Panel Cable Connectors
- 100 Feet 10 AWG Black PV Wire
- Air Conditioner Soft Starts
- Atkinson Electronics GSCM Mini Generator Control Module
- Midnite Solar Baby Box Enclosure with DIN Rail
- Miscellaneous Midnite Solar MNEPV Series 150 V DIN Mount DC Breakers
- Blue Sea Systems HD-Series Heavy Duty On-Off Battery Switch
- 13 Feet of 4/0 Welding Cable – Red
- 13 Feet of 4/0 Welding Cable – Black
- 37.5 Feet of 4 AWG Welding Cable – Red
- 32.5 Feet of 4 AWG Welding Cable – Black
- 11 Feet of 2 AWG Welding Cable – Red
- 2 Feet of 2 AWG Welding Cable – Black
- 6 Feet of 6 AWG Bare Solid Copper Grounding Wire
- 4 Feet of Portable Cord Soow 6/4 6 AWG 4 Conductor
- Red and Black Dual Wall Shrink Tubing
- Various 4/0, 2 AWG, 4 AWG and 6 AWG Tinned Copper Lugs
- Positive and Negative Busbars
- Miscellaneous parts, sealants, breakers, and connectors
Installation Notes
This installation was completed in December of 2021. The owners of this 5th wheel were recently retired and they planned to spend extended time traveling in their rig. They wanted a system capable of providing power and conveniences while boondocking for extended periods during their travels. They spent some time talking to RV dealers about possibilities, but were not satisfied with the service or knowledge of the people to whom they were talking. They eventually found me and we had a discussion about what they wanted and what I could provide. They brought the 5th wheel to me to look over and during that process decided to have me build a system for them. They left the 5th wheel with me while parts were ordered and once they arrived, I began the work. This particular floor plan had lots of open space behind the basement wall, which made it pretty easy to install all the equipment out of sight and out of the way. The customers actually gained additional storage space in the generator compartment because the OEM batteries were removed from that area. This freed up that space for other items. The system is based around four Battleborn 100 amp hour batteries and a Victron Multiplus II inverter/charger. The Multiplus II was installed in line ahead of the main power panel and can power all electrical circuits in the trailer (within the capabilities of the inverter). All the components went in with no issues. There was plenty of room left over to allow for expansion of the battery bank in the future if desired as well. There is also room on the roof for additional solar if desired. This 5th wheel came from the factory with easy roof access to the middle of the basement storage compartment, making installing the solar panel wiring an easy task. Once the installation was complete, the customers returned to pick up the 5th wheel and get a tutorial on how to use all the components. They were very happy with the final product and were looking forward to taking it out and using their new system.