<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>Lightening has a high voltage and HIgh current and High frequency. The lightening has gathered it energy over a large area, It has either picked up electrons or lost electrons to generate this large Potential The electrons want to return to the earth, So you do not want that path to be through your equipment. </span></div><div><span>1) ESTABILSH A GOOD GROUND ROD ( i had a system that had blown up about 3 times, I drove a 3/4" sectioned ground rod 80' and then drove another about 20 feet away. Tied the two together and to the frames of my modules. Then I took aand connected to the module conductors, using a MOV similar to what Midnight solar sells. The system is in a higher relative area, this I did in 2003 it has never blown up since </span></div><div><br></div><div
style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"><font size="2" face="Arial"><div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" class="hr" contentEditable="false" readonly="true"></div><b><span style="font-weight: bold;">From:</span></b> James Rudolph <jamesrudolph99@gmail.com><br><b><span style="font-weight: bold;">To:</span></b> RE-wrenches <re-wrenches@lists.re-wrenches.org><br><b><span style="font-weight: bold;">Sent:</span></b> Friday, September 9, 2011 11:32 AM<br><b><span style="font-weight: bold;">Subject:</span></b> [RE-wrenches] Designing PV systems for lightning prone areas<br></font><br><div id="yiv1929885195"><br>Dear Wrenches,<br><br>Does anybody have any best practices for designing large PV arrays on metal building in lightning prone areas? Lightning
arrestors on the DC side and Surge suppressors on the AC load side? Any input or resources would be greatly appreciated.<br>
<br>Sunny Regards,<br> <br>James Rudolph<br>NABCEP Certified Installer<br>Master Electrician<br>SF Energy<br><div class="yiv1929885195gmail_quote"><span dir="ltr"></span><br><blockquote style="margin: 0px 0px 0px 0.8ex; padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;" class="yiv1929885195gmail_quote">
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