my Camper is currently equipped with a single Multiplus 12/1200/50 and Im looking for a way to increase my AC capability.
Im thought about converting to 48V, but that would be a huge hussle. Then I looked into 2 kVA or 3 kVA Multiplusses. But these would require giant cables given the current demand on a 12V system.
In the end Im thinking about “just” adding a second 12/1200/50 and parallel them to end up with 2,4 kVA. The wiring would be the least hassle and these things are “dirt” cheap at the moment. So even financially it would make sense. I mean I can buy two 1,2 kVA for the price of one 2 or 3 kVA.
But how is paralling done? I googled, but I didnt really get an answer. Just connect them via VE bus and thats it? Cant be this simple? Im afraid one or both will blow up with their AC connections in parallel.
Thanks. I read that article. And I wanted to watch the video, but I couldnt.
This leaves more open questions than it answers, tho. While wire gauge and fuses where treated in extreme detail, the config part is basically “just do it; battery settings; output voltage; done”.
Question: Will two MP work out of the box in parallel? Will they automatically sync their outputs to each other (when connected via VE bus)?
They do need to be programmed for parallel operation before they’ll work: if two are connected to each other out of the box they’ll just shut down. Config of course always depends on the rest of the system, that’s why there are so many linked documents in that manual, and the strong advisement to consult an experienced, trained installer to complete the process.