How to Design and Install a Solar PV System?
N modules = Total size of the PV array (W) / Rating of selected panels in peak-watts. Suppose, in our case the load is 3000 Wh/per day. To know the needed total W Peak of a solar panel capacity, we use PFG factor i.e. Total W Peak of PV panel capacity = 3000 / 3.2 (PFG) = 931 W Peak. Now, the required number of PV panels are = 931 / 160W = 5.8.