Hi, Looking at the MultiPlus II datasheet: https://www.victronenergy.com/upload/documents/Datasheet-MultiPlus-II-inverter-charger-EN.pdf for the 48/8000/ 110-100. I’m a bit confused at some of the specification items. Cont. output power at 25 °C is 6400 W / 6.4kW - i’m assuming that’s the AC side…

[image] Ian Chilton: What then is the peak power of 15000W / 15kW? - is the above sustained and this is for short periods of time? It can start a short duration load with that peak (think a big pump). [image] Ian Chilton: So is that 6.4kW output limit the max output for any loads across …

Hi @lxonline , That’s really helpful, thank you! The only thing i’m still a bit confused about is this seems to be a contradiction? [image] LX: [image] ichilton: What then is the 100A transfer switch and 100A max AC input current ? This is what it can passthrough to loads so you can hav…

[image] Ian Chilton: AC OUT 1 (critical loads) therefore limited to 26A No, because there is no relay to worry about there. You could just have all the loads out here. The block diagram in the manual helps to understand flow and switching. Most service connections for homes aren’t above 63A…

[image] LX: The block diagram in the manual helps to understand flow and switching. Ah yeah that does make more sense! So: AC OUT 1 can switch 100A straight from AC IN and stays on during grid loss. AC OUT 2 can switch 50A - but goes off in the event of grid loss. But if you are drawing 5…

[image] Ian Chilton: But if you are drawing 50A and loose the grid, what happens, when you can only draw 26A from the battery? Yes pretry much, so it makes sense ro have rhat which you don’t want to be inverter supported on the ac2 out or on the input with the grid meter idea you had earlier. …

ok, thank you! And does the inverter have ample protection for it’s outputs? So you only need to provide normal over-current protection for any circuits based on cable - you don’t need to over-current protect the total to protect the inverter?

The inverter has no switch gear. While switch gear that is added is there to some degree for inverter protection, it is really there (and sized for) for wiring. You need fusing for battery cables, and switch gear for cables installed on the inverter input, output and for bypassing. This would be re…

Ok, great - so I take that as I need to: Size the RCBO and cable going to the AC IN appropriately. If it can switch 100A, then it sounds like an 80A RCBO + 16mm cable should be fine and conservative. Have circuit protection for each circuit you put behind the AC outputs. But don’t need to worry…

@lxonline with all the talk of outputs etc, any advice on where I need current meters to make this work? - [image] Multiple Grid Meters on ESS? DIY Hi! I have a few consumer units - one for the house, a separate feed and board to the garage and an EV charger …

MultiPlus II Specification confusion

DIY

ichilton (Ian Chilton) 20 April 2026 20:57 10

@lxonline with all the talk of outputs etc, any advice on where I need current meters to make this work? -

Thanks!

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MultiPlus II Specification confusion

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