Campervan Electrical System 3,000W Inverter, 600W Solar, Alternator Charging

📖 My Best-Selling book on Amazon: https://cleversolarpower.com/off-grid... Link to the diagram and components used: https://cleversolarpower.com/camperva... Components used: 24V 3000VA multiplus 2: https://amzn.to/49mrFE4 24V 100Ah LiFePO4 Battery: https://amzn.to/4pu3jhO Victron orion TR-Smart 12/24 15A: https://amzn.to/3L5zkyF MPPT Charge Controller: https://amzn.to/3LyYO7C 200W Solar Panels: https://amzn.to/3NlFMlD Orion Tr 24/12 20A: https://amzn.to/49a1r90 MCCB: https://amzn.to/49dPAa1 MEGA Fuse Busbar: https://amzn.to/4aJGHWN Negative busbar: https://amzn.to/45ux0Ig MEGA Fuses https://amzn.to/4quMWD3 MIDI Fuses: https://amzn.to/49eY14Y MRBF Terminal: https://amzn.to/4jsgpdU MRBF Fuses: https://amzn.to/4jvjj1m 12V DC Fusebox: https://amzn.to/4smMs2W Welding cable: https://amzn.to/4aPy50W THHN wire: https://amzn.to/4aUQFot grounding wire: https://amzn.to/49teqSb Shunt BMV 712: https://amzn.to/4jt1Jet PV Disconnect switch: https://amzn.to/4aPkTco alternatively: 24V 3000W Giandel inverter https://amzn.to/4jyWwlw 24V 30A Battery charger https://amzn.to/4jvHX29 In this video I walk through a complete 24-volt RV electrical system built around a 3000W (3000VA) inverter/charger. The goal is to show a practical layout that can charge from three sources—solar on the roof, the alternator while driving through a DC-DC charger, and shore power when you plug in at a campground. I explain how each charging source connects into the system and why 24V is a good middle ground for an RV compared to 12V and 48V. For the solar side, I use three 200W panels and show how to check panel voltage against the charge controller’s maximum input, including a cold-weather safety factor so you don’t accidentally exceed the MPPT rating. I also show how to estimate realistic charging current into a 24V battery bank and how that influences charge controller sizing. From there, I cover the purpose of a PV disconnect and when you do—or don’t—need string fuses. For alternator charging, I explain why a DC-DC charger is used instead of connecting lithium batteries directly to the alternator, and how a 12V starting system can charge a 24V house bank safely. On the shore power side, I explain what an inverter/charger does, roughly how much charging power a 70A charger provides at 24V, and how the same unit can power AC loads from shore power when you’re plugged in. I also mention how generator charging fits in through a transfer switch. In the battery section, I show a simple 24V battery bank using two 24V 100Ah batteries in parallel for about 5kWh of storage, and I explain the wiring approach using MRBF fuses at each battery, a main DC breaker as the primary disconnect, and a busbar to keep connections safe and organized. I also cover why some inverter specs are listed in VA instead of watts, what that means in practice, and what a 3000W-class inverter can realistically run in an RV. Because most RV accessories are still 12V, I include a 24V-to-12V converter feeding a dedicated 12V fuse box for lights, pumps, fans, and other 12V loads. I then go through the wire and fuse sizing step by step for the major circuits: PV wiring, MPPT output wiring, inverter cables and main fuse, individual battery cables and fuses, DC-DC charger input/output wiring, and the 24V-to-12V converter wiring. The focus is on how to calculate currents, apply safety margins, and pick standard fuse sizes and wire gauges. Finally, I show how to place a GFCI breaker on the inverter’s output, how to size it for 120V versus 230V setups, and how grounding is handled in a mobile system. I explain the difference between AC grounding and DC grounding, where grounds should land, and why adding extra neutral-to-ground bonds in the wrong place can cause nuisance tripping.