I currently have a single Multiplus 12/3000 on my boat and I'm interested in adding a second to give me 240 amps of charging, 6000 watts of inverter, and redundancy in the event that one fails. This seems pretty straightforward, but I have two concerns.
1. What happens if one inverter fails? It seems as if the whole system goes down until the functioning MultiPlus is reprogrammed to operate as a single unit. Is this true? If so, stacked Multis would actually halve the reliability of the system, rather than provide redundancy.
2. Are both Multis running all the time, wasting battery power, even when the total load on the system is only a few hundred watts? Or does the slave only power on when demand exceeds what the master can provide?
Thanks!