How to measure how much solar we need?
(hope this is right section) Brought home TT last month and now have basics taken care of and RV is road ready. Now starting to think about bigger long term projects. One project is, we would like...
Forum Discussion
RJsfishin wrote:
Quote:
the 5-600 AH the panels can do tracking on a good summer day
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How does one do this w/ 700 watts of panels ?
My 100 watt panels put out 5 amps max while tracking on a good day.
7 panels x 5 amps = 35 amps max.
35 amps x 8 hrs = 280 - 300 AHs per day,.....a very far cry from 5 - 600.
Where did I go wrong ?
Yeah, those little low watt, low voltage panels are cute, aren't they. ;)
So lets run some numbers. My three panels put out 50a. (17a, 17a, 16a) A good summer day starts at 6 am and ends around 8 pm for me. tracking allows me to take advantage of all of it. That's 14 hours at a possible 50a. That is closer to 700 ah but I trimmed off some for good measure since we will only be getting 35a or so the first and last hour.
Now you might improve your situation by running those 100 watt panels in pairs with a MPPT controller. ;)
