Add the Voc of all 5 panels to see if they can be connected in Series which would be a max of 150V plus considering that low temps will raise the Voc.I have 5 175W panels and since it is an odd number, I understand they must all be wired the same way. Should I put them in series or parallel to go into a 150V/100A Victron Smartsolar controller?
Ok add the Voc x 5 panels in Series.Voc is 23.9v
Any light on a panel produces Voc even at sunrise on a cold morning.Newbie here. Is the above logic correct? Aren't you assuming there will be maximum vertical sunshine while it is -40 degrees? It does not happen. Does it?
Newbie here. Is the above logic correct? Aren't you assuming there will be maximum vertical sunshine while it is -40 degrees? It does not happen. Does it?
Open circuit of 21, not short circuit...My panels have a short circuit voltage of 21 volts, and a operating voltage of 18 volts. I see the higher voltage every morning as the sun starts to shine, and then the voltage will drop towards the 18 when the panels are producing max amps.
High voltage with little amps could harm the SCC. I would say that any cold day at -40 or below is a risk for exceeding the 149.XX volts, and not just waiting until high noon to make the measurement.