Mandatory. There is no ESS operability built into the MK3 dongle, only programming the assistant. The Cerbo is what does the calculation and control of the ESS because it is meant for tying into the solar controllers / rest of the system.
You are officially my hero!
This would work with a standard 120v. There was confusion if the 2x120 also would handle it, but a single one would be a more budget friendly choice if you never plan to use the second relay.
Yes it does require a Cerbo GX / Venus GX, but Victron just came out with the Cerbo-S GX which is a "lite" version that omits some of the excess ports and has a better price point. I should make clear, you also need the MK3 so that you can program the inverter with the appropriate assistants from your computer.
Yes, the demo was done with 12v batteries, but the 24v inverter functions identically.
It's what I'm here for
I'm not sure because they aren't really available in the USA yet. Good topic for another thread.
Another quick question for you:This would work with a standard 120v. There was confusion if the 2x120 also would handle it, but a single one would be a more budget friendly choice if you never plan to use the second relay.
Yes it does require a Cerbo GX / Venus GX, but Victron just came out with the Cerbo-S GX which is a "lite" version that omits some of the excess ports and has a better price point. I should make clear, you also need the MK3 so that you can program the inverter with the appropriate assistants from your computer.
Yes, the demo was done with 12v batteries, but the 24v inverter functions identically.
It's what I'm here for
I'm not sure because they aren't really available in the USA yet. Good topic for another thread.
yes. This is simple.
No, only identical units can be stacked.
There is no advantage of using a 2x120 vs a 1x120 if your plan is to stack for 240v. L2 would never be used on either inverter. L1 would go through inverter 1, l2 would go through inverter 2
Clear. Thanks.
I asked primarily from the perspective f future-proofing. If I’m only going to start with a single Multiplus II but may want to upgrade to full split-phase sometime in the future, it sounds as though the only difference between one and later two 120x2s versus one and later two 120x1s is limited to the capability of a Critical Loads panel with only a single Multiplus II.
.I see you beat me to the punch -I just came to the same conclusion.
For those seeking 240/120 split-phase backup capability, perhaps. But that is not my use-case. I’m only interested in single-leg consumption offset and single-leg backup power for critical loads.
What ever happened to the_colorist?
As I come to more fully-understand the capability of the Multiplus II 120x1, I’m coming to agree with that perspective.
Assuming this is correct, what does that mean as far as permitted residential installs based on Multiplus II?
That it isn't happening in any place that requires UL listing. Victron needs to step up their game in regards to UL 1741 listing.
Your earlier post referred to ‘UL 1741’
Got it. Thanks. That’s the detail I was looking for.
No technical reason. You are correct, market prioritization and cost for approval.
Understand. That’s always been my concern with them.
It's a pity because from what I can see, they have a unique and cost-effective offering for the US residential ESS market.
I’m still analyzing MPII 120x2 versus MPII 120x1 and would appreciate a confirmation from you on the following:
Could you give me some feedback on this setup. I currently have a boat with shore power and a generator. Shore power comes in as split phase with 30A on each phase. Each phase is switched individually. So, when I unplug or turn off the shore phase, one phase will drop out before the other phase. I don’t think the Multiplus will bridge the phases in this scenario, but I need to make sure it doesn’t bridge them until both phases have dropped.
