my actual system is a simple grid-tied single phase 5kw fronius primo with 7kw of panels. im in the process of adding another 5kw fronius primo, a multiplus ii 48v/5000/50-70 and 200ah battery bank. i would connect one fronius to the multiplus in the ac input and the second fronius to ac output of the multiplus. the multi will be connected to the main panel and the battery bank.
will this setup work?
will i keep feeding the grid all the excess energy?
is the rule 1:1 met as the fronius on the ac output is 5kw?
Will 4mm2 wire be ok or i need bigger wires (the distance beetween inverter and grid is about 4mt)