I have (2)-Multi 12/3000/120-50's in my motorhome and I need to understand how to configure them in a way to utilize 120v(single phase) either 15/20/30amp as well as 240v dual leg.
The motorhome is currently set up with both Multi’s linked, each one is powered by its own 120v leg. I like this as they charge a single Lifepo4(home made) as one unit. So they charge fine off 240v shore or my 240v generator. They will not accept any common(split)120v single leg power though. Both units fault out immediately.
This makes sense as they are linked and are looking for separate legs. I have tried unlinking them by removing the cat cable and some reprogramming of the Multi’s, but no luck. I also tried running with one unit off in different combinations of cable or no cable, still no luck.
The need to utilize single phase 120v is not common, but it is important to have the capability even if requires some physical manipulation such as removing the cat cable and/or running with one unit off.
Hope my goal makes sense. If not ask away.
Looking for some direction or advise.