This site is now in read-only archive mode. Please move all discussion, and create a new account at the new Victron Community site.
My Honda 7000 generator has a 240V output. The plug has two hots, a neutral and a ground so I assume I would make a cable with four wires. But how would I wire this into the AC-IN of the Multiplus II 48/8000 which seems to have a single L, an N, and a ground bar?
You would wire your two in parallel up to an incoming breaker. You need equal lengths for good current sharing to each unit.
Then wire the generator into the breaker as the source. Or if you also have grid then into a change over switch.
We are off grid. Are you saying we'd wire the generator into the breaker box and not to the MP2 directly?
And at the breaker box the two legs would go one each to an MP2's AC-IN?
So the Breaker Box would take the four wires from the generator (two hots, neutral, and ground) and then output that into one hot, a ground, and a neutral for AC-IN to MPIIA, as well as one hot, one ground, and one neutral to the AC-IN to MPIIB?
Sort of does not answer the question as the generator can do 120v/ 230v?
My answer above is for 230v parallel where 2x5kva becomes 10kva on one phase.
So what model inverters do you have exactly?
I don't know the generator in question but it sounds like the output is 120-0-120V so if the Multis are 230V input (you don't say despite the request above) then connect the two lives to the L and N of both Multis and leave the neutral disconnected but insulated.
As you are off grid the N side of the Multis should be bonded to their earth terminals, not sure if that is achieved by the internal bonding relays in yourEd circumstances, @Alexandra will know! And to the genny earth and to an earth electrode in the ground.
Edit: in this thread it is explained that the internal bonding relay is closed only if there is no power on the AC-In. So in your case you need to do it externally.
Thanks for that info, I'll try to digest it.
It is not that complicated but it would help us to help you if you answer @Alexandra's question "So what model inverters do you have exactly? "
@sharpener, we have two Multiplus II 48/8000s. But we learned recently that they cannot operate in parallel as the dealer had told us. So we are now in the process of trying to determine what inverter(s) to get to replace them.
If we were to get a single Multiplus II 48/15000 inverter, if I am understanding your response, we could wire the two hots of the generator cable to the L and N of the AC-IN on the Multiplus, leave the neutral disconnected but insulated (and I assume not put a terminal on that wire), and I assume we would also hook the ground wire into the ground bar of the Multiplus?
Thanks for trying to help me out, sorry for my ignorance and the delay. It has been a hectic few days.
@sharpener and @Alexandra,
We settled on replacing the two MP II with a single 48/15000 Quattro.
The Quattro takes generator input with 187-265VAC, 45-65Hz, Power Factor 1.
Our Honda 7000 puts out two legs of 120V as discussed above. So, just to confirm, if I wire the Honda with one hot going into the AC1 L and the other hot going into the AC1 N, then the ground connected, and then the neutral wire not connected, that should work?
