I have a Victron Multiplus 3kVA 120V purchased June 2020 (Part #: PMP123021102). I'm realizing I'm in need of more (faster) charging power and more inverting power on occasion. Some questions:
1) Will my Multiplus be compatible to wire in parallel with a new one purchased now?
2) I've read through the parallel wiring manual and understand the considerations to AC and DC wiring, etc. I'm bummed to read on these forums that wiring in parallel means both Multis need to always be powered on and turning one off means the first Multi drops output/faults unless reconfiguring for standalone use. Is this still the case? This would be extremely limiting in my case as my need for faster charging (4x 200A Victron LiFePO4 in parallel, 800A bank on a boat) is only on occasion. I could wire for standalone of both units but (a) I have a single CCGX installed on a Raspberry Pi for monitoring and do not want to add a second just to monitor another Multiplus, and (b) I need more inverting power as my 2 air conditioning units (16000 BTU and 10000 BTU) are wired through the inverters and there is not enough inverting power to turn on the compressor of the larger unit, even with soft starts installed.
3) A bit unrelated, but in my installation I have never seen Power Control work quite right, though I believe it is my fault for going on assumptions. While running on generator power, I tend to limit current with the multi control panel to 40A. I have a Victron AC current sensor installed on the Multiplus and it shows up on the CCGX as "PV Inverter" (wish I could change that label). A few loads on the boat do not run through the inverter as they are very large loads especially on startup (dive compressor, watermaker, and a separate 100A battery charger which I intend to replace with the new Multi). Taking these loads into account when switched ON was my reasoning for installing the current sensor so that the Multi would know about them for Power Control reasons. Will the Multiplus limit charging in also taking the AC current sensor loads into account? I'm finding that it does not, but maybe there is some configuration required.
Appreciate any guidance.
Thanks,
Chris