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Eric, I've got a photo essay about one incident that I prepared on just this topic. It shows photos of the shadow from a triplex cable that is about 5 feet from a PV crossing several modules. The shadow only lasts for about 40 minutes very early in the morning, but it reduces the output by 20% during that time (the shadow also covers about 20% of a row of cells). Production data from Enphase's Enlighten web site shows how the shaded module output compares to a nearby unshaded module. If you (you meaning any RE-Wrench) want a copy send me a note off list. The file is approximately 5 MB so it takes a while to upload or download. Kent Osterberg Blue Mountain Solar, Inc. Eric Thomas wrote:
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