<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <meta content="text/html; charset=ISO-8859-1"
      http-equiv="Content-Type">
  </head>
  <body bgcolor="#ffffff" text="#000000">
    On 3/19/2011 7:53 AM, Drake wrote:
    <blockquote
      cite="mid:20110319145307.B7D167D4014@homiemail-a79.g.dreamhost.com"
      type="cite">
      Hello Wrenches,<br>
      <br>
      I had an inquiry concerning the effect of EMP on photovoltaic
      systems.  We are heading for a period of solar activity that
      likely
      will produce this effect.  According to a local AEP (American
      Electric Power) representative, the utility is spending a lot of
      money to
      counter this anticipated problem.  Additionally, nuclear related
      issues are moving back to the front burner.  <br>
      <br>
      It is clear that the pulse would damage an inverter, but possibly
      it
      could be put in a Faraday cage.  But a number of questions
      arise. 
      <ul>
        <li>Would the pulse damage the modules?  </li>
        <li>Could the large currents and voltages induced by EMP damage
          the
          conductors in the cells?   </li>
        <li>Even if the inverters were surrounded by a Faraday cage,
          would
          induced currents & voltages from the modules harm the
          inverters? 
          <ul>
            <li>Would series fuses and surge protectors be adequate
              protection.
            </li>
          </ul>
        </li>
      </ul>
      Has any research been done in this area?  Does anyone know
      answers to any of these questions?<br>
      <br>
      Thanks,<br>
      <br>
      Drake <br>
      <br>
    </blockquote>
    <br>
    <br>
    I don't remember seeing much if any problems during previous 11 year
    cycle solar maximums, really...<br>
    <br>
    Being a ham radio guy, I look forward to solar max and more
    sunspots...  HF radio works WAY better during solar maximum !<br>
    <br>
    boB<br>
    <br>
    <br>
    <br>
    <blockquote
      cite="mid:20110319145307.B7D167D4014@homiemail-a79.g.dreamhost.com"
      type="cite">
      <x-sigsep>
        <p>
          <font color="#0000ff">Drake
            Chamberlin<x-tab>        </x-tab>
            <br>
            Athens Electric<br>
            OH License
            44810<x-tab>        </x-tab><br>
            CO license 3773<br>
            NABCEP Certified PV<br>
          </font></p>
        <pre wrap="">
<fieldset class="mimeAttachmentHeader"></fieldset>
_______________________________________________
List sponsored by Home Power magazine

List Address: <a class="moz-txt-link-abbreviated" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a>

Options & settings:
<a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a>

List-Archive: <a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a>

List rules & etiquette:
<a class="moz-txt-link-abbreviated" href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a>

Check out participant bios:
<a class="moz-txt-link-abbreviated" href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a>

</pre>
      </x-sigsep></blockquote>
    <br>
  </body>
</html>