schematics Image


Camper electric; combining Multiplus Mppt and Orion smart DC-DC

Campervan electrics

I am currently rebuilding a Fiat Ducato van into a campervan. For the electrical system we want to use a 230v fridge, a roof fan, Led lights and some smaller accesoires such as usb chargers etc.

A rough estimate of powerusage:


Hours p/d


Ah @12v

Fridge 230v




















Laptop/bikechargers etc.











909,6 Wh

75 Ah

Adding losses, I estimate a bit less than 100Ah/day.


  • Multiplus 800VA
  • Orion DC/DC smart 18A or 30A
  • Mppt 75/15 with +- 200Wp solar


The intended use of the camper van is to travel around, stay a day or to and then move again. so alternator charging and solar should be most of the charging required. Going with a multiplus is a nice to have, as adding a charger later would require a lot of components if I buy a separate inverter.

I am still looking into what I can afford,100Ah lithium sounds great, but 220Ah AGM is also reasonable for our uses. Due to a smart alternator a DC/DC charger seems needed anyways, so all should be easily set up for both chemistries. We’d prefer using a 12v system, as this is commonly used.

Do you have any remarks on this schematic?

(Apart from the not displayed safety on the 230v AC, and the non-calculated wire gauge.)


My question;

Can I combine the Multiplus, orion smart and mppt without a shunt or GX device or is this not advisable? As far as I can tell this is mostly for monitoring?

The multi and orion won't interfere with the ignition switch used, so it is mainly the communication between the MPPT and other chargers that could be problematic?

Thanks in advance!


bram1 asked
Kevin Windrem answered ·

3 Answers

Victron Orion-Tr Smart 12/12-30A with Schaudt EBL 119

Kan iemand mij aan een schema helpen hoe een Victron Orion-Tr Smart 12/12-30A met Schaudt EBL 119 aan te sluiten?

stapper11 asked

0 Answers

Is this the correct use of the BMS CL 12/100 in a van system?

Hi everyone,

I can't find a lot of detailed information on the Smart BMS CL 12/100 and was hoping for some insight on how I've applied it to my system. The main reason I wanted to use it was it provides more amperage than the Orion.

(I have yet to add wire size, fuses and breakers to my diagram)

Any help, insight or suggestions would be greatly appreciated.

(Van is a MB Sprinter, 2 x 200ah Lithium Victron Batteries, BMS is connect directly to start battery)


MB Diagram.jpg

scottca asked

0 Answers

Victron Wiring Example - MultiPlus II with Lithium, Cerbo GX and new Lynx Smart BMS

Victron Energy produces loads of great schematic drawings to help you plan your wiring. This is the first in a series of schematic drawings and it features the new Lynx Smart BMS together with the MultiPlus II with two 120v circuits. You can see there is solar and alternator charging as this is would be a complex install for an RV in the US for example.


Here is a link to the full-sized pdf.

Jono (Victron Energy Staff) asked
markhandley answered ·

1 Answer

Simple Overlanding Schematic, Solar + DC-to-DC Charging

Looking for a quick review on this schematic, though not sure if this is the right place for it. Can someone experienced give me some feedback? Thanks in advance.


repadventures asked
repadventures edited ·

0 Answers

CamperVan setup help


Currently I am working on a simple setup for a camper. I would like to ask you to check if this setup is correct or if I still need to adjust something here.

For now I only want to use shore power to charge the battery and in the future I want to expand this with solar panels.

I do not intend to connect this setup to the alternator for the time being.

Kind Regards


lempke asked
lempke answered ·

2 Answers

Help Setting Up 24v System In RV

We have been struggling to figure out all of the components needed to setup a 24v system in our RV. We have 4 255w solar panels, Victron Multiplus 3000, Victron 150|35 MPPT, and after much debate between Tesla modules, and Battleborn batteries, we are going with Battleborn.

We have also been looking at the Orion converters but do not know whether to go with an isolated or non-isolated one. We also were looking at the Victron Octo GX to control it all.

The RV is currently powered via 30A service. It would also be nice to change the batteries off the alternator while driving.

Thank you!
Holly & Dustin.

sasquatters asked
Kevin Windrem answered ·

3 Answers

Updated Pylontech wiring

Victron has updated its Pylontech Wiring. See the picture below.


In the version before, the GND cable was connected to the negative pole of the DC Distributor.

Now they have excluded the GND cable at the negative pole of the DC distributor. So the system is not grounded at the negative pole anymore.

Why did they change it?

Is it true, that the negative pole of the Battery is connected to Ground over the case Ground, as this fellow says:

I have read in the MPPT manual:


So the MPPT should be grounded on the negative pole am I right?

Cansin Sari asked
Alexandra edited ·

1 Answer

Regard sur ma future installation


Je viens de terminer le schéma de l'installation que je souhaite obtenir. Je le soumet à votre critique pour savoir si elle est correcte, améliorable ou complètement fausse, avant de passer diverses commandes.


Notes : La puissance totale des panneaux est correcte pour mes besoins. Un seul MPPT 150/45 semble suffisant avec le calculateur Victron, mais j'en ai mis deux pour parer à d'éventuels problèmes sur un panneau solaire ou un MPPT. Je ne sais pas comment tout mettre à la terre et le câble nécessaire entre l'onduleur et le coffret électrique.

Vous pouvez à loisir modifier ce schéma :)

Merci de m'avoir lu.

eliska asked
eliska answered ·

7 Answers

Campervan Schematics


Hi All,

I have finished my first revision of the campervan schematics, I am sure I would have forgotten a few items (such as the Dometic fridge, a shower solution etc), but this is the general installation. I wanted some people to check it over and to see if everything looks legit in terms of wiring etc. I suspect the solar wattage should be enough considering I have the DC-DC charger? Also in terms of AC power, can someone advise on a suitable distribution box that will work seamlessly with the Multiplus and the correct wire sizes for this also please?

Let me know if anything looks wrong. I plan to fit what I can and get it approved by an electrician.

campervandan asked
campervandan commented ·

3 Answers

AC System Design

I've got a few Victron items on order (for a boat) and one of them is a Multiplus 12 | 3000 | 120. I'm installing this as part of an AC refresh, which will include moving from twin 120V 30A single phase inlets to a 120/240V 50A split phase. We have some favourite marinas that only provide a single 120V 30A dock outlet, which is why I've incorporated that into the design. This is AC only and doesn't show solar, Cerbo GX or the shunt, etc.

This is my first revision with the Victron in place, if you have a few minutes, please provide constructive criticism. Note, the contactor is there to provide higher capacity for switched loads running through the inverter and still allow all the features that the inverter provides to operate, such as power assist.

One of my questions is around circuit grounding for devices on the output side of the inverter (AC1 and AC2). As I've drawn it, there will be 2 ground busses - one before the inverter and one after. This is consistent with the schematics I've seen on the Victron site. I have seen other places where there is only one ground buss for everything - devices before and after the inverter share the same buss. Which is correct?

Thank you in advance for taking the time to assist!


svalvasori asked
Matthias Lange - DE answered ·

1 Answer

Updates to schematics

Just wondering if there will be any updated schematics made available?

Specifically ones incorportating a multiplus, MPPT, lithiums, ve.bus bms, gx touch 50 etc etc

brent1982 asked
Matthias Lange - DE answered ·

1 Answer

Schematics software

Hi I am answering my own question really , i asked about software for doing schematics, i have downloaded Smartdraw and must admit it looks nearly as good as the Victron ones albeit i have had to download images of the components from the web and they are not always that good but with a bit of messing about not too bad at all.

macca61 asked
Alexandra answered ·

1 Answer

schéma électrique (installation électrique dans un bateau)


Je viens de visionner une vidéo réalisée par Victron au sujet d'une course autour du monde de voiliers qui aura lieu en 2022.

Tout à la fin de la vidéo à 15 min 10 sec, on peut voir brièvement le schéma électrique de l'installation Victron sur ce bateau.

Savez-vous où peut-on se procurer le schéma au format pdf ?



olivier-vitu asked
olivier-vitu answered ·

2 Answers

Multiplus & Autotransformer terminal/bolt sizes

I am trying to find the correct bolt/terminal sizes for the Multiplus 230V 5000VA and Autotransformer 100A. I have found scattered information in different manuals and am getting a bit frustrated. Can anyone point me to the correct documentation where this is available.

i.e. AC Input and Output, ground (internal and case), battery connections...etc

hummingbear asked
hummingbear commented ·

2 Answers

Victron product image library?

I see so many nicely drawn system schematic diagrams - is there a Victron product image library available?

merlepeter asked
Guy Stewart (Victron Community Manager) answered ·

5 Answers

Could I get help on downloading the victron symbols for schematic design

I am having difficulty loading the victron symbols for use in .io any suggestions?

dfraizer asked
ess-and-solar-solutions answered ·

1 Answer

Schematic wiring and setup Cerbo GX, VE.Bus BMS, LiFePO4, Multi

Since yesterday the Cerbo GX manual is ready to download here.

Was a bit surprised that the Cerbo is powered by the Load disconnect from the VE.Bus BMS, but that is how the manual reads.
I finally was able to finish the schematic wiring for the new setup.

Maybe someone can have a look and check the schematic and see if it is acceptable?



Stefanie asked
nebulight commented ·

5 Answers

Battery protect connection to multiplus

I'm having some difficulty understanding how I can connect the BatteryProtect (12v/65a) with the MultiPlus 12/800/35. The MultiPlus when charging should go to the IN but when it's inverting it should use OUT, you obviously can connect both on the BP. It's says clearly in the manual that you shouldn't use chargers on the OUT terminal but how about consumers(aka the inverter mode) on the IN?

The schematic on the Victron site is way too elaborate to translate to my setup. Can I just connect the MultiPlus to the IN of the BP?

e11enn asked
Paul B answered ·

1 Answer

Orion TR Smart DC-DC charger isolated 12/12-30 remote switch

Is the standard wiring for the remote switch connector a bridge between the L and H pins?

espritis asked
rodneyab answered ·

1 Answer

Is there a schematic I could use for a Multi 12/1600/70-16, 100/50 MPPT, shunt and 2 batteries?

Please, urgent : With 12/1600/70-16 ,MPPt100/50 , shunt and 2 bateries ,what scheme should I follow.Many thanks

stevens asked
stevens answered ·

3 Answers

Looking for a system schematic for RV with Solar and Tesla batteries.

I'm currently designing a system for my RV, we plan on having 5 x 315 watt solar panels with 2 x Tesla batteries. The RV already has 50 amp service and a transfer switch (for generator). I'm thinking of a 24/3000 Mulitplus, 250/70 SmartSolar controller and a BMV 712.

djkarau asked
spirou answered ·

3 Answers

Van Installation Diagram Questions

I was wondering if I could post the wiring diagram I have made in preparation for an installation in a 2018 Mercedes Sprinter Motorhome conversion with nearly all Victron equipment. I wanted to check before ordering everything that I hadn't gone overboard nor missed anything out and would really appreciate passing it by someone/s here if anybdy had any time/interest?

Thanks, Ben

Ben Pearson asked
Ben Pearson commented ·

3 Answers

Camper Alternator/Solar System: Please Critique

Hi! I'm adding a house battery system to my pickup truck camper, and I want to confirm the basic schematic before moving forward. I do not want to combine the start & house batteries, and I do not want AC charging available for either battery. I may add an AC inverter at a later date, but that's beyond the scope of the project at this point.

I've left out fuses. switches, and other necessary additions from the diagram at this time.

Please take a look, and thanks for your help.


shade asked
shade edited ·

3 Answers

Lithium without BMS campervan set up correct?


I am designing a system with x2 lifepo4 138ah 'powerwalls' which I bought without BMS. I am going to keep a close eye on the state of cell balance of the lifepo4's through a separate Battery Capacity Meter plugged into the 4s and balance charge them as necessary.

My system comprises the following - 300w panels, 100/20 victron smart solar mppt, victron multiplus 800/35 inverter charger, 712 battery meter, sterling B2B charger and victron battery protect.

I found the following schematic from a fellow member which Im thinking to use its pretty much the same as my own.

My question is will x1 battery protect be ok (keeping an eye on the discharge) and if so where is the best place to place it? Directly from the battery?

Im a complete newby and if this schematic is good I would use it.

Many thanks for all your help!


longgun asked
longgun commented ·

1 Answer

28 Posts
26 Users

Topic Experts

There are currently no experts identified for this topic. Can you answer questions in this topic area? Community members who provide answers that are marked as correct earn reputation and may become recognized as topic experts.