Winks
Full Member
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Now, we've all been told that shading even a small section of solar panel has a very big impact on output. Here's a set of pictures illustrating just how big that effect can be. This was on a 45W panel which I picked up free from a member of this forum. The shading is provided only by the case for the DMM in the pictures, well less than 10% of the surface area. This shows short circuit amps, the voltage was hardly affected, down from about 22v to about 20v.





Cheers
H