(2) 12V Solar Panels....Series or Parallel?
I have (2) 140w 12V panels. The Bogart Engineering solar controller can operate on 12V or 24V input. Is there any advantage or disadvantage to wiring the panels in series for 24V rather than parallel ...
Forum Discussion
"Up to 30amp maximum solar current. Four 135w solar panels for 12v system or 8 at 24v can be accommodated"
A typical 130w panel has an Isc of 8.2a, which you will get in full sun. So a 135 will do 8.5a. Four of those makes 34a.
Then the usual advice is to have the controller able to handle 1.25 the total Isc of the array unless it has amps clipping at its max rating (that controller might have it--most PWMs don't), so normally four 135s would need a 42.5a controller (so you buy the next size up from that)
A typical 130w panel has an Isc of 8.2a, which you will get in full sun. So a 135 will do 8.5a. Four of those makes 34a.
Then the usual advice is to have the controller able to handle 1.25 the total Isc of the array unless it has amps clipping at its max rating (that controller might have it--most PWMs don't), so normally four 135s would need a 42.5a controller (so you buy the next size up from that)
