I am designing a system with the following components:
-1x multiplus 2, 3000w/48v inverter,
- 2x smartsolar charge controllers,
- approximately 2.5kw of solar
-1x fortress eflex, 5.4kwh LFP battery
The system will have an AC input which will normally be grid power, but can also be a generator if the grid goes down. (There is an existing generator interlock in the main panel that will supply power to the multiplus)
The output of the multiplus will energize a newly constructed critical load panel.
The goal of the system is for the inverter + battery to keep the newly constructed panel "off grid" and run primarily off the solar + battery. If solar is not sufficient to keep the battery recharged I would like to have the multiplus pull power from the grid as needed to meet the energy needs of the critical load subpanel.
Can anyone detail the necessary settings(or additional parts that I am missing) to have the system configured in this manner?