I believe these were a roof mount.  I forwarded everyone's comments to the other wrench not on the list.

Thanks,

Ray Walters
Remote Solar
303 505-8760

On 8/14/18 11:50 AM, b...@midnitesolar.com wrote:


My cohort here that used to make PV modules thinks that something may have hit the back of the

module ?  Maybe somebody weed-eating around the array and something hit it ?

We notice the cracks in Ray's cells are white. Are the backs of these modules white too ?

Interesting if they still work but if just a couple of cells out of 60 or 70 are bad then it might

not be noticeable, electrically ?

boB


On 8/14/2018 7:31 AM, Dave Tedeyan wrote:
Ray,
I have seen this many times while servicing systems. I have not noticed it cause any issues, at least for modules that are 3-8 years old. On one site, I too did an IR scan and even curve traced modules showing this, and there was no difference compared to other nearby modules that did not show this cracking. The attached photo is what I have seen a lot of. It is very similar although not exactly the same as the pattern your photos show. (you may need to zoom in to
see it).

Cheers,
Dave


*Dave Tedeyan*
Senior Engineer | Taitem Engineering, PC

10 Verizon Lane | Lansing, NY 14882
o. _607.930.3481_ x6  f. 607.277.2119
www.taitem.com <http://www.taitem.com>

Solar •Sustainability • Energy • Design
B-Corporation Best for the World 2018 Honoree

On Tue, Aug 14, 2018 at 10:23 AM, Ray <r...@solarray.com <mailto:r...@solarray.com>> wrote:

    Hi All;

    I've had a colleague ask that I post a couple pictures of what
    appears to be cracks in cells under the glass.  The glass is not
    damaged.  These are Sun Edison modules, so apparently no
    warranty.  Has anyone seen this, and are these possibly dangerous
    (hot spots) or is this nothing to worry about?  An Infrared
    camera did not show any issues.

    As always your invaluable input is always appreciated.

    Thanks,

-- Ray Walters
    Remote Solar
    303 505-8760


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