I have an existing 3.5KWp solar (enphase micro inverters since 2015). The excess is exported to the grid. The solar comes to the consumer unit via solar generation meter and an isolator. There is a MCB on the consumer unit for the solar feed.
I have setup a ESS using - Venus GX, Multiplus 48V to feed a critical load of 250-290W. I have an ET340. My consumer unit is far away from the Multiplus. If I wire things like the picture shown, would ET340 be of any good?
I want to be able to use the Excess solar to charge the Lithium batteries rather than export it.