Hi Guys,

I want to order a second Multiplus II inverter, so that I can connect it in parallel to my first one. I have read before that the 2 inverters need to be the same or compatible in order to do this. My current inverter is a Multiplus II 48/3000/35A - AC transfer capacity 32A, if I order the second inverter that has the same description will it be compatible to connect in parallel? Or is there a specific ID on the inverter that I need to match the 2 inverters? 

 

The model number has to be the same, also all wires ac and dc have to be EXACTLY the same length, otherwise the wire resistance difference will create a problem, got this from an installer and also found it somewhere on the Victron website ( for the life of me, can’t put a finger on it )

The latest model number is 2629

Edited December 1, 20205 yr by Tariq

Thanks Tariq,

I found a small label on the inside that had this number on it 2629456.VFD I presume this is the model number. Thanks for the advise on the cable length. 

Do you guys think that installing the second inverter in parallel is fairly straight forward as in plug and play, or is it a bit more complicated than that?

Hi @Kilowatt, also wanting to install a 2nd Multi at some stage - from what I have read, wiring in a parallel setup is a crucial element to success

This Victron doc may offer some insights: https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf

Regards

Thanks for sharing smurfdbn,

I managed to get the first Multiplus installed fairly easy, but have a feeling this is not as straight forward as I thought. If I can't figure it out then i will have to get an installer to fix my mess🤣

I was hoping i would find a youtube tutorial, but have not yet seen anything worthwhile yet. 

Anyway i will be happy to share once i have it installed.