Forked from another topic: Venus OS LARGE for Multiple VE.Bus networks? - #5 by UpCycleElectric I am upgrading an electrical canal boat from a BoOEI (Bunch of Old Electrical Installations) to a single NIVI (Neatly Integrated Victron Installation). To accomplice that I will be installing a single C…

I think that you are going to have some issues here. The Multiplus is the heart of the system and connected to the GX will assume the central role in the screen. However, if you are setting the drive battery as the main monitored battery bank then that will not align with the Multiplus, which is ass…

From your description above, it seems that the propulsion system is completely independent of the house and navigation systems. As such, it should have its own independent monitoring and control, with the data from the house system displayed on that as a subsystem. For the 12V nav system battery, t…

That pretty much sums up my doubt. Worst case scenario I’ll simply unplug the ve-bus. I’ll report back when I get there.

The 12V gets charged by shore power dayly, I’ve only ever encountered a situation where there was a need to charge it off shore when either the battery was EOL or someone forgot to plug the charger in. But yes, for long haul off shore isolated dc-dc is the way to go. Or when the 12V would power a bo…

Trying to leave the other ‘grounding’ topic alone I’m copying my response over to this topic: (see Boat Electrical Grounding: 230V + AGM- + LifePO4- to Same Ground? - #21 ) ….double post deleted for clarity….

…moved from grounding topic… I am not making any assumptions that the current installation on that boat has been sufficiently thought through on the subject of correct grounding (nor any other electrical subject for that matter, hence the upgrade :confused:). Could I ask guys to have look at what …

@UpCycleElectric I suggest you get a copy of the standard for electrical systems on small craft, I think this applies to up to 24m hull length, no idea what standards are for >24m and I believe this is what EU craft should conform to. This allows a DC system to be either connected to hull ground for…

My advice is to hire a qualified individual to at minimum to design your electrical system and probably install it for you as well. You don’t know, what you don’t know. Online forums are helpful for question about settings or operation questions, they are not the place for electrical or system des…

No offense but this ‘hire a pro’ response is the most hilarious answer I have ever read.

Reading again, I would expect neutral and ground to be connected in yhe shore power supply, and if you have a Victron inverter that this has a ground relay that closes when there is no ac input.

Electric boat, propulsion and house battery, Cerbo GX monitoring and MP II AC power supply

DIY

Buzzy 27 July 2026 20:14 15

Maybe this will help: Cerbo GX Mk II monitoring both 12V and 24V system - #2 by pwfarnell

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Electric boat, propulsion and house battery, Cerbo GX monitoring and MP II AC power supply

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