PV solar system charging voltage low
Ok solar gurus - I am experiencing low voltage with my PV solar system. The charging voltage will not go above 12.8V. I'm using a Morningstar SS-6L-12V SunSaver controller (2nd gen) with 4 new Crown 6...
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So the DLS-45 is hooked up (45 amp, somebody was wondering the output) and the Trimetric monitor is currently showing almost 110% charge level compared to the OEM converter/charger. However the voltage is only 13.9/14.0 and at the charger terminals is 14.2 so I’m thinking the wire gage is insufficient. I’m using 8 AWG and it’s 7 feet from the charger to the batteries, but I didn’t notice the wire chart I was looking at assumed 5% loss to resistance which would be a 0.7 volt drop. Looks like I’ll try 4 AWG and see if I can get full voltage to the batteries… this trial and error thing can be time consuming :-P
