We have just had installed solar on our home. At the moment I am trying to come to grips with WiFi monitoring. Our system is as follows,
2 strings 12x315W JA panels = 3.78kW each. Total 7.56kW into 2 3kW Sungrow inverters. Our home has a 2 phase configuration. There was much discussion on how this system should be set up with a road block at the length of cable 177 metres between the meter box and the house. As luck would have it 2-25mm cables kept the voltage rise below the arbitrary 2%. Up to date all is working well. Some installers will try and talk you into a single phase setup which is just plain wrong and I guess this is because of the highly competitive nature of the industry and the complexity of solar that the client must try and absorb.