This DIY camper solar wiring diagram and parts list is a high powered system capable of delivering up to 6000w of power through 120V or 240V split phase (3000w through each L1 & L2. This diagram is also capable of charging via solar at a rate of up to 2900w per charge controller added.
This diagram features:
- Dual 3000W Inverter Charger
- 800+ Amp Hours (@12V) of Battery Storage Capacity in a 24V Battery Bank
- Virtually unlimited Solar Array Capacity
- Alternator Charging (100A)
- Shore Power Charging/Passthrough
**Disclaimer & Managing expectations** Setting up dual inverters is NOT a ‘beginner friendly’ task. It DOES require some programming via computer to sync the dual inverters so they will deliver 240V split phase properly (2x 120V legs, 180 degrees out of phase). If you don’t understand the concept of the phrase you just read (and are unwilling to learn this concept)… this setup may be a bit too advanced. That said… here are some good resources that talk about some of the nuances of dual inverter setups:
- https://www.victronenergy.com/live/ve.bus:manual_parallel_and_three_phase_systems
- https://player.vimeo.com/video/372986305
- https://shop.pkys.com/Setting-up-parallel-and-split-phase-systems-using-the-Victron-MultiPlus-and-Quattro-inverter-chargers_b_161.html
**PLEASE READ ALL USER MANUALS BEFORE ATTEMPTING THIS INSTALL**
Not quite what you are looking for? Check out other system setups here: https://www.explorist.life/solarwiringdiagrams
History of Changes to this Page (Click to Expand)
Post Published December 10, 2020
Table of Contents
TABLE OF CONTENTS
HOW TO USE THIS PAGE – VIDEO
This orientation video will show you how to best use this page to build your DIY Camper Solar Setup. It’s a quick watch but I think it’s pretty important.
DIY Camper Van Wiring Diagram
DIY Camper Solar Parts – Shopping List
The list below is a consolidated parts list for this entire system (Minus the solar charging leg, as that varies greatly from system to system. If you need help designing an appropriate solar array for this system, consider joining the EXPLORIST.life private group: https://www.community.explorist.life ).
For the ‘Quantities’ in the below shopping list, each singular component is listed a quanty per each, wire is listed a quantity of feet, and heat shrink is listed as qty 1 = 2.25″.
For Example:
Qty 1 – Inverter Charger means you need to purchase 1 Inverter Charger
Qty 3 – 4/0 Wire means you need 3 feet of 4/0 wire. This may mean you need to buy 5ft from the product page
Qty 5 heat shrink means you need 5 pieces of 2.25″ heat shrink. This means you’ll need 5 x 2.25″ pieces of heat shrink for a total of 11.25″ of heat shrink.
Camper Solar Parts Detail
The section below will tell you where each of the parts from above fits into the wiring diagram. This is quite lengthy, but if you are having trouble seeing the diagram or just want more clarification that the diagram above doesn’t deliver, hopefully this will help:
Brian Marozzi
Monday 17th of January 2022
Hey Nate,
I’m a huge fan of what you do and offer. I purchased your 24V – 6000W – 120V/240V SPLIT PHASE CAMPER SOLAR WIRING DIAGRAM used your parts lists, watched all of your videos and just finished my installation!!
I have a 45 ft. Momentum 5th Wheel so with lots of roof space I went with 2 arrays each array has 4-330 watt residential panels wired is series/parallel.
I am simply loving it Thanks so much.
My Question is introducing my generator, (onan 5500) thinking of adding a Autotransformer to convert 240 so I can charge through both legs and wondering what gauge wire to use? Got any wiring diagrams for autotransformers?
Greg
Saturday 1st of January 2022
Hello Nate,
How feasible would it be to use a pair of the new Multiplus II 48/3000 in place of the 24V system shown if alternator charging was removed and most of the 12V system retained? Basically powering only the AC side of an RV and only charging the 12V batteries for that system.
With the 50amp pass-through capability of the MPII, could the inverter then share more of the 6000W across either L1 or L2 without dedicating 3000W to each specific leg?
Kevin K
Friday 31st of December 2021
re: my previous comments
Hey there!
As I continue to research, I keep realizing how I'm still learning these concepts :) I mistakenly thought the 230v MultiPlus's were equivalent to 240v but in fact, they are the European standard at 230v and 50hz.
I think I've found some 240v inverters that could be used in tandem with a step-down autotransformer configuration, but alas, none of them were Victron energy. So if I want to go a full Victron Energy setup, I think that means I'd do a step-up with the Autotransformer (which I believe results in some increased power consumption).
Kevin K
Thursday 30th of December 2021
Hey there! I'm designing a camper build with a primarily off-grid 48v battery + solar array system. I need a 240v AC output to power a mini-split and a collection of 120v AC outputs for household applications. Being a software guy and not an electrical engineer, I've been struggling to figure out how to design a system for both 120v & 240v. I found recommendations to use things like transformers or DC-to-DC converters but couldn't find any diagrams that explained it. But it seems like a split phase dual inverter setup is another choice? (maybe it's more efficient than the other solutions.)
After looking at the Victron MultiPlus and MultiPlus II spec sheets, I think there are a few options that fit my parameters:
120v output: * MultiPlus 2 kVA and 3 kVA * MultiPlus-II 48/3000/35-50
240v output: * MultiPlus 800 VA – 5 kVA * MultiPlus-II (48/*/* options)
Do I need to mix and match MultiPlus versions to configure both 120v and 240v outputs? Would I need to stay within the product version? i.e. two MultiPlus or two MultiPlus-II? (i.e. NOT one MultiPlus and one Multi-Plus-II)
I see a footnote on the MultiPlus 800 VA – 5 kVA and MultiPlus-II 48v options that there are models that "Can be adjusted to 60 HZ. 120 V models available on request". Is that the route to go?
The current design has 3x battery packs in parallel of the EG4 48V 100AH lcd battery.
Thanks for the assistance and I'm sure you've heard this before but the depth of information from Explorist Life is awesome!
URLs: * https://www.victronenergy.com/upload/documents/Datasheet-Multiplus-inverter-charger_2kVA-and-3kVA-120V-US-EN.pdf * https://www.victronenergy.com/upload/documents/Datasheet-MultiPlus-inverter-charger--800VA-5kVA-EN-.pdf * https://www.victronenergy.com/upload/documents/Datasheet-MultiPlus-II-inverter-charger-EN.pdf * https://www.victronenergy.com/upload/documents/Datasheet-MultiPlus-II-48V-3kVA-35-50-120V-EN.pdf * https://www.signaturesolar.us/products/48v-100ah-lcd-battery-by-eg4 * https://cdn.shopify.com/s/files/1/0559/2147/5789/files/48V100AH_LCD_SPEC.pdf?v=1631566461&ref=4_rHcgZ9x-TiF-
Charly
Wednesday 29th of December 2021
Hi Nate!! One dude....You say 100amps from buck boost@ alternator, but I think it would be max at @12v. Victron says max. 50 amps at@24v. It would be great if you could make a video with options to charge from alternator.....(Cyrix-li-ct, buck boost,..)Thanks a lot for your job!!