I am evaluating using 2 x 48/3000 instead of 1 x 48/5000 in an off grid configuration for 2 reasons.
1. Safety - I need 230 VAC available for frost protection of my leisure home in the mountains of Norway
2. The Zero Load Power is only 10 W (for 1 x 48/3000 versus 18 W for the 48/5000 saving 100 Wh per day is significant in winter months with very little sunshine.
But it requires that I can run with only one Multiplus ON and the other one OFF or defect.