Solar Panel Voc-MPPT?
Wondering if there is any relationship between measured Voc and MPPT performance with a 24v panel. My 12v panel has a Voc rating of 21.9 and Isc of 8.2, but I often see 8.2ish when Voc is only 20....
Forum Discussion
No Eco-W yet, but will be similar to when I had two PWMs this past summer and two arrays.
Also you can do the Y trick to split the long wire out to the array(s) either at the array end or the controller end or both ends instead of running two long wires all the way, but that gets messy with 24 and 12 for R and different amps sizes of controller.
Worked for me when the one array was too big for the size of one controller, so I put a Y near the battery bank and used two controllers, each taking some of the amps. This reduced the amps any one of the controllers got to under its rating for amps. It wasn't important for each to get half the amps, just to get the amps down to size for any of the controllers. The two added to the same total amps as if you had one bigger size controller and no Y
Also you can do the Y trick to split the long wire out to the array(s) either at the array end or the controller end or both ends instead of running two long wires all the way, but that gets messy with 24 and 12 for R and different amps sizes of controller.
Worked for me when the one array was too big for the size of one controller, so I put a Y near the battery bank and used two controllers, each taking some of the amps. This reduced the amps any one of the controllers got to under its rating for amps. It wasn't important for each to get half the amps, just to get the amps down to size for any of the controllers. The two added to the same total amps as if you had one bigger size controller and no Y
