Single point ground or??
I provided a UFER ground in the footing of the new house. The equipment is currently all grounded to rods very close to its location and the current array location is also grounded to that single point. I have planned to run #6 bare from the equipment to tie into the UFER ground. This would be about 90' of bare in the ditch. My question is should I tie this #6 to the existing ground close to the equipment, or should I abandon the existing ground and use only the UFER at the house. I hope my hasty diagrams below clarify this. To repeat, should I tie the existing ground rods into the new system, or abandon them?
Off grid, all solar, passive and active ( winter wood heat supplements) solar DHW, no backup.
Array 1 1980w, 12 Solarworld 165 w panels - Outback Flex max 80
Array 2 1590 w, 6 Solarworld 265 w panels - Outback flex max 80
Well array 600w, 6 Kyocera 130 w with Grundfos sqflex11 and cu200 to elevated storage, ( 2- 330 g tanks,) no battery storage at well
GB industrial 510 AH battery 24 V