[RE-wrenches] Designing PV systems for lightning prone areas

[Jeff Oldham]

Yep, lots of copper in the ground is key as is a suppression specialist. I have a 23kW array on the top of a structure on the top of a 400' remote island at 8 degrees from the Equator. This site averages 125 strikes/year. We built a 4/0 CU ground grid completely around and under the building and have a lightning rod at each corner of the roof tied to this grid. Delta's everywhere and solid grounding. In over 5 years we have "only" lost 2 CC's and one HUB10. I consider this to be exceptional good considering the exposure. We are looking at both Outback and Midnite solutions and 86 the Deltas. Good luck, 'cuz w/lightning luck counts for a lot! -jeff o From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative SOLutions
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