loverofpeace
New Member
- Joined
- Apr 22, 2020
- Messages
- 195
Hooked my panels up to my system today and tried to get several readings over the course of the day with my multimeter and MPPT.
At the multimeter I seem to get slightly over 20V on each panel (at the peak) and around 5.5a (also peak) which seems to line up with the 110w rating. At my MPPT, I'm getting only around 15-16V each. The amps seem to hold true on the MPPT.
What's the reason behind this?
Ohm's law would have me believe that there's some resistance in the circuit between the panels and the MPPT. The only thing that's in between them is the solar hookup wire: 6mm2 (10awg), 3m (10ft), 84×0,3mm tin plated copper)
Could this really be it that the wire would be causing enough resistance to result in a loss of ~20-25W?
Panel Specs:
Panels: 2x 110W Flexible SunPower Cells
Vmp = 18.5v
Voc = 22.5v
Imp = 5.94a
Isc = 6.24a
At the multimeter I seem to get slightly over 20V on each panel (at the peak) and around 5.5a (also peak) which seems to line up with the 110w rating. At my MPPT, I'm getting only around 15-16V each. The amps seem to hold true on the MPPT.
What's the reason behind this?
Ohm's law would have me believe that there's some resistance in the circuit between the panels and the MPPT. The only thing that's in between them is the solar hookup wire: 6mm2 (10awg), 3m (10ft), 84×0,3mm tin plated copper)
Could this really be it that the wire would be causing enough resistance to result in a loss of ~20-25W?
Panel Specs:
Panels: 2x 110W Flexible SunPower Cells
Vmp = 18.5v
Voc = 22.5v
Imp = 5.94a
Isc = 6.24a