So maybe the cable to the rooftop is a little too thin and has voltage drop?
If you put them in VE.Smart bluetooth network (if available for your equipment) the rooftop MPPT will use the shunt voltage, and correct for the voltage drop.
So maybe the cable to the rooftop is a little too thin and has voltage drop?
If you put them in VE.Smart bluetooth network (if available for your equipment) the rooftop MPPT will use the shunt voltage, and correct for the voltage drop.