Using the formula (Panel Wattage x Number of Panels / Battery Voltage x 1.25) for MPPT sizing that I have seen listed at Alt E Store and several other sites is giving me numbers that just don't jive with what I would expect vs the datasheets for the actual MPPT. Could someone check my math or help to clarify?
Using this formula for my pair of Seraphim 320W panels gives me 66.66A, which is clearly beyond the capacity of the 100/50.
However, wiring the two panels in parallel should, using numbers from Seraphim's datasheets, yield a Voc of 45.5V (45.5V x 1) and a combined Isc of 17.92A (8.96A x 2), which would be well within the capacity of the 100/50.
Additionally, the 100/50 also lists a max nominal PV of 700W, which further makes me think that it would be a good fit for these panels, even at the theoretical max of 640W. After 30% of realistic losses the charge controller should only be seeing something like 450W, yes?
Any help would be *greatly* appreciated. I'm new to this so please excuse any idiocy on my part!
