Connection of MPPT to Multiplus II

Multilplus II 3kVa 24Vdc 120Vac
Smartsolar MPPT 100 50
BMV 712

The inverter has dual DC terminal studs. I will only need one set for battery input. Can I use the second set to connect to my MPPT charger, for wiring convenience? This would keep my 6AWG wire from MPPT much shorter. DC input is sized 2/0AWG and has fused disconnect in circuit. MPPT output has circuit breaker protection.

Intention of the system is to have MPPT charging available at all times, with the inverter switched to off whenever the cabin is not in use. No grid connections.

BMV712 shunt/temp sensor will be connected close to battery terminals.

Yes

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@Ludo Thanks for the input!

Will the inverter still draw current when it is switched off but there is a DC voltage at the DC terminals?

Yes, they are directly connected to the battery / SmartShunt

The DC terminals are not intended as a busbar.
For that rated inverter you are at the limit of what one battery cable is designed for, which is why there are 2 terminals.

The Victron wiring guide is here:
https://www.victronenergy.com/upload/documents/The_Wiring_Unlimited_book/43562-Wiring_Unlimited-pdf-en.pdf

Best practice is to use a busbar.

One word technical answers omit a lot of detail and context.

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If it is physically in the off state it should not have an idle load, other devices like a Cerbo, or built in GX, would still draw power.
If you went with a best-practice busbar approach, you could physically isolate the Multi.

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Thanks @nickdb !

going with busbars is still in consideration.

It is more work but worth the effort.
As is running dual battery cables.
With these installs, more is more and the easier way can sneak back to haunt you :wink:

Let us know how you get on, we have a show us your system section where you can put the final product on display.

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