Hi I have a 150/45 with four 170W panels with max P and Short Circuit A of 9.5 Amps. They are I assume all in parallel, plugged into a 3 port box (2 with a parallel pigtai)l on the roof of my RV. The openV is 23.8V know the efficiency of these panel are no where near 100% which brings on the inquiry.
Would I be pushing it if I add one more 170W PV? Thanks.
John