I have asked this question as part of another thread and received some valuable info from @ee21. I wanted to start a new thread in order to see if others had input OR if there are users who already have the following scenario in place successfully. I searched through the forum and have yet to find a posting on this scenario that involves a grid meter and zero feedback to grid.
I currently have a 48v DC coupled system:
PV > MPPT > BatteryBank > Inverter > 120v Isolated loads.
I would like to expand the system and support 120/240 loads, support a critical load panel, overall household load demand outside of panel with no grid feedback to the utility. Any excess PV production would go to the battery bank or a diversion load, ex. Water heater.
Visually it would be something like this:
The difference being there would be two inverters (Quattros 48/3000/120v) each connected to a grid meter(s). It appears from the information that I gathered to support both phases I would need either two ET112s (one for each phase) OR ET340 (use just two of the phases).
Equipment wise I think I need the following:
MPPT Controller (250/100) – Already have
BMV712 – Already have
2 x Quattro 48/3000/120v – Need
Color GX – Need
Grid Meter (ET112 or ET340) - Need
2 x RS485-USB cables – Need
Has anyone done this with split phase (120/240v)?