<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Right Dave. The VooDoo of EMI filtering, lightning protection or EMP induced voltage reduction attempts are similar and governed by the inverse square law. How much energy and how close is it? You must properly reduce energy propagation <u class="">at every point.</u> I have seen very expensive protection systems with poor implementation making the entire scheme useless. So, is the cost and effort worth the results? Study, then study more. It may be more cost effective to have a back part rather than spending money on an expensive preventative measure.</div><div class=""><br class=""></div>Larry Crutcher<br class=""><div class=""><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;">Starlight Solar Power Systems</div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;"><br class=""></div><br class="Apple-interchange-newline">
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<div><br class=""><div class="">On Mar 9, 2023, at 11:18 AM, Marco Mangelsdorf via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" class="">re-wrenches@lists.re-wrenches.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><font size="4" class="">Hmmm...I wonder how much SolArk is dreaming.</font><div class=""><font size="4" class=""><a href="https://www.sol-ark.com/e-m-p/" class="">https://www.sol-ark.com/e-m-p/</a><br class=""></font></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 9, 2023 at 9:58 AM Dave Angelini Offgrid Solar via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" class="">re-wrenches@lists.re-wrenches.org</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-size:12pt;font-family:Verdana,Geneva,sans-serif" class="">
<div id="m_5778047743419261978signature" class="">Depends on how close and how strong the pulse or strike is. In Mil satellites, the same thing. You can harden but are dreaming if you think your electronics can really survive it. Even harder to protect electronics that are powered on. The KH series spy sats I saw schematics for had redundant systems that were off or rotated I seem to remember. This was back in the 90's so very sketchy in the fog of time.</div>
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<div class="">For Offgrid, and High Rel power systems, a faraday cage for your inverter and CC is a must if you are in high lightning zone. A top of a mountain is often really hard on a house or Telcom. One place I have blows SPD's yearly. <br class="">
<pre class=""> </pre>
<pre class=""><strong class=""><span style="font-size:small" class="">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" rel="noopener" target="_blank" class="">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" target="_blank" class="">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div><p class=""><br class=""></p><p id="m_5778047743419261978reply-intro" class="">On 2023-03-09 9:09 am, Drake Chamberlin via RE-wrenches wrote:</p>
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<div style="font-size:10pt;font-family:Verdana,Geneva,sans-serif" class=""><p class="">Backwoods Solar sells kits to harden against EMP. I am wondering how effective they would be.</p><p class="">Drake</p><p class=""><br class=""></p><p class=""><em class="">Drake Chamberlin</em></p><p class=""><em class="">Athens Electric LLC</em></p><p class=""><em class="">Ohio Electrical Contractor’s License 44810</em></p><p class=""><em class="">CO Master Electrician’s License 4526</em></p><p class=""><em class="">NABCEP Certified PV Installation Professional</em></p>
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</div><p class=""><br class=""></p><p id="m_5778047743419261978v1reply-intro" class="">On 2023-03-08 11:49, Glenn Burt via RE-wrenches wrote:</p>
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<div dir="auto" class="">I would review Sol Arks website as they say they are immune. Probably have something to back that up published there.</div>
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<div dir="auto" class="">-Glenn</div>
<div dir="auto" class="">Sent from my 'smart'phone, so please excuse typos and spelling errors.</div>
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<div dir="auto" class=""> </div>
<div dir="auto" class="">------ Original message------</div>
<div dir="auto" class=""><strong class="">From: </strong>Marco Mangelsdorf via RE-wrenches</div>
<div dir="auto" class=""><strong class="">Date: </strong>Wed, Mar 8, 2023 11:37 AM</div>
<div dir="auto" class=""><strong class="">To: </strong>RE-wrenches;</div>
<div dir="auto" class=""><strong class="">Cc: </strong>Marco Mangelsdorf;</div>
<div dir="auto" class=""><strong class="">Subject:</strong>[RE-wrenches] PV and EMP</div>
<div dir="auto" class=""> </div>
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Aloha all,
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<div class="">Have any of you come across any articles or white papers on how PV systems (including energy storage) fare under conditions of electromagnetic pulses and solar flares?</div>
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<div class="">Mahalo, </div>
<div class="">marco</div>
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