In reading through the manual in prearation before delivery of the gear was alarmed when I read this, “The AC input must be protected by a fuse or magnetic circuit breaker rated at 32 A (for 3 kVA model), 50 A (for 5 kVA model) and 100 A (for 8 kVA and 10 kVA model) or less, and the cable cross-se…

Inverter may be capable of producing say 30a, but its also capable of passing more from acin to acout, to allow various system configurations.

If not already signed up, for free, look at Victron Professional Which gives great insight to everything victron.

Thanks for the link. I have signed up for that. Loads of very useful stuff in there. I have not come across any other manufacturing support on anything like what Victron have got. “Pig in the proverbial.”

This, it’s the Transfer Switch that connects ACin to ACout that’s rated at 100A for the 8000VA model. This is what you’re protecting with the MCB.

And to add on, unless the circuit feeding the inverter is rated less than the 100A it is capable of passing through. For example my main house feed is 60A so 100A for the system is way too high. On some houses the incoming is only 32A and so adjusted wiring size and breaker (as well as inverter se…

Thank for the above replies. I have an 100 amp supply to the premises but the cables to the inverter are designed around 32 A a legacy from the previous install. The capability of the inverter to deal with the 100 A explains why it is so heavy!

Been getting my head around the various comms cables, and the schematic of connecting the MPPT 450/100 to the Cerbo has a choice of using either VE can or VE direct. The one difference I can see is that the VE can needs a terminator at both ends whilst the direct is slimmer. Is there a preference.

I dont have one unless you are considering cost or expansion. Can is useful if you have a bunch and you want to daisy chain them. The terminators come with the GX so that is covered either way. Ve direct is nice and solid comms too.

An RJ45 cable is cheap and available in various/custom lengths. The connector also sits well in the socket where vedirect is much smaller and more likely to unseat if bumped. From an ease of install/use/reliability I would take CAN any day.

Thank you I have put VE direct on the purchase list

Clarification needed on AC connection Multiplus 2 48/8kva/230v

Q&A and troubleshooting

BjoernK (Björn Kellermann) January 9, 2026, 1:14pm 18

My build thread includes a bill o material and links to AliExpress for the PCB.

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Clarification needed on AC connection Multiplus 2 48/8kva/230v

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