We're getting ready to commission our 18kPV. We have it and the battery mounted on the wall, and the electrician will be coming next week to add a transfer switch and connect the grid and load, etc.
This is possible, and once the grid connections are made, the system will automatically detect the phasing. I suggest connecting the Wi-Fi dongle to the monitoring system before the electrician arrives so you're all set. Feel free to reach out via DM or contact your distributor for assistance with configuring your inverter settings.