Sailboat PV System
I am installing a PV system on my 43' sailboat. Here is what I have so far--a Kyocera 135 (polycrystalline) mounted to the dodger and a Morningstar MPPT 45W controller. Space is limited on the boat, but I plan to add two more 85W panels (ET monocrystalline). These will be mounted on the side rails, one port and one starboard. I plan on wiring the 3 panels up in parallel. The controller is wired to my 12V house bank which is about 750 AHrs. The first question I have concerns partial shading of the panels. With all the rigging of a ketch, there will always be some partial shading of 1 or more panels. With this in mind, is it better to wire the 3 panels in parallel or series? Also, has anyone heard anything about ET solar panel quality? I paid about $250 each for them. Is there a problem using different panels (the max power voltages are 17.7V for the Kyocera and 18.0V for the ET)? Does either mono or poly handle partial shading better than the other? Thanks in advance!