If anyone could help me with wire, breaker, fuse details, I would like to order my missing parts soon. The panels will be on an attached garage, Growatt and batteries in the garage.
This system will independent of the grid.
Parts I have:
*(12) Santan 250W (used)
VOC 37.6V
VMP 30.3V
ISC 8.85A
Max pwr curr 8.27A
Max system voltage 600
Fuse Rating 15A
*Growatt SC48120 (Purchased directly from Watts247)
https://watts247.com/manuals/gw/Growatt SC48120 SC48100 Charge Controller Manual.pdf
I think I can wire the panels in 3S4P. This Growatt has 2 PV inputs. The longest run from the panels to the controller will be less than 60 feet.
Question: Should I be running wires from each group into a breaker box, or combining on the roof, then through a breaker and into the MPPT? I am unclear on the exact way I need to connect the 4 sets of panels down to the 2 inputs. I would like to have a way to isolate for troubleshooting.
Question: 8 gauge wire from panels to breakers?
Question: Batteries: I have not purchased batteries yet. I am considering two of the Ampere Time 24V 100 Ah. The Growatt manual shows a chart with minimum battery capacity, but I think this is only referring to lead acid. Will two of the the 24V 100Ah, wired in series be compatible with this system?
Question: Breakers or fuses between Growatt and batteries? Size, type?
This system will independent of the grid.
Parts I have:
*(12) Santan 250W (used)
VOC 37.6V
VMP 30.3V
ISC 8.85A
Max pwr curr 8.27A
Max system voltage 600
Fuse Rating 15A
*Growatt SC48120 (Purchased directly from Watts247)
https://watts247.com/manuals/gw/Growatt SC48120 SC48100 Charge Controller Manual.pdf
I think I can wire the panels in 3S4P. This Growatt has 2 PV inputs. The longest run from the panels to the controller will be less than 60 feet.
Question: Should I be running wires from each group into a breaker box, or combining on the roof, then through a breaker and into the MPPT? I am unclear on the exact way I need to connect the 4 sets of panels down to the 2 inputs. I would like to have a way to isolate for troubleshooting.
Question: 8 gauge wire from panels to breakers?
Question: Batteries: I have not purchased batteries yet. I am considering two of the Ampere Time 24V 100 Ah. The Growatt manual shows a chart with minimum battery capacity, but I think this is only referring to lead acid. Will two of the the 24V 100Ah, wired in series be compatible with this system?
Question: Breakers or fuses between Growatt and batteries? Size, type?