Everything seems to be working with my Multiplus 12/2000/80-15 120v except when I plugin shore power. As soon as I do plugin to an outlet at my house, the breaker at my house flips immediately.
I’ve tested:
shore power cords and inlet and they all work and tested well
checked all wiring, fuses/breakers and connections and all seem well from what I can tell
used multimeter to check for continuous flow issues (wiring, ground wires, etc.) and didn’t find any issues
if the multiplus is turned to “off” position then the house breaker doesn’t flip
I believe the van AC wiring looks correct (shore power inlet > breaker > multiplus AC in)
I’m new to all of this so I’m not sure what I’m doing wrong. I have breakers/fuses/on-off switches for everything to protect everything. Are there any settings from the app or anything else that could be causing this? I’m in the US so I wasn’t sure if I needed to set any settings on the MultiPlus.
I assume this is a vehicle install which you are connecting to an outside socket at your house. If this is the case, these attached threads may throw some light on a the issue.
I’m having a similar issue, but just swapped L1 and L2 feeds at the main breaker in the RV and the issue stayed on the same circuits, which means it’s not a multiplus issue most likely and is in the breaker panel somewhere. I’ve got a Brinkley with a sub panel built into the main panel. I have a new panel on order without a sub panel, but even circuits not on the sub portion on that half will cause a trip. Swap L1 and L2 in your panel and see what happens.
The wife just had idea and it showed us the problem was the GFCI breaker even though the GFCI is not tripping and the whole breaker is. We took our extension cord and ran it into the house to a 15 amp outlet and all our L2 circuits where able to be powered on and we even ran our furion chill cube AC off it for a few minutes when it would otherwise trip almost immediately. It’s got to be related to how the Mutliplus II combines L1 and L2 internally when using a dogbone adapter as it recognizes the input being the same and ignores L2 input and somehow outputs L1 input to both L1 and L2 output in that scenario.
Thanks again to everyone. The post that @pwfarnell provided about getting a surge protector ($9.99) and the 15 amp single outlet grounding adapter ($0.99) resolved the issue.
I really hope Victron does something about this as something that costs about $1,000 shouldn’t have issues like this. Definitely makes me question their quality control management.
