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    Midnite Solar has some DC arc fault equipment both built into their
    charge controllers (for battery based systems) and their Combiner
    boxes.  The nice thing about having AFCI at the combiner is that it
    actually protects the wiring from the array to the inverter, so if
    an arc is occurring in say the attic, it will interrupt the
    electricity at its source, not at the load.<br>
    <br>
    Ray Walters<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 10/13/2012 9:12 AM, Rebecca Lundberg
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAMy9JmdpT+n_k5XxjxGwzsiTn5h0EMafW+3KFp2fonjv9fi9EQ@mail.gmail.com"
      type="cite">Dear fellow wrenches,<br>
      <br>
      Does anyone have suggestions for the 'best' way to keep up with
      product availability for meeting 690.11 on DC AFCI? I understand
      that when this code section was written there was no available
      device, and know that at least several companies are working on
      devices. How will I know (before the AHJ knows :-) that
      residential-scale products are available for purchase, and at what
      point would you say now should be required over every other
      option?<br>
      <br>
      Second question: I have an inspector insisting that the solar PV
      system is the same as a utility service, and is requiring all of
      the required service code references to apply. Anybody have a
      concise reference that might convince him otherwise? This same
      inspector has decided that the electrical permit will have adders
      for each inverter as service equipment, and each module as an
      electrical device. It would sure be nice if there was more
      consistency...we're still in the early adopter phase here in
      Minnesota.<br>
      <br>
      Thanks in advance for your input.<br clear="all">
      <br>
      Keep Shining!<br>
      <span style="font-family:arial,helvetica,sans-serif">Rebecca
        Lundberg</span><br
        style="font-family:arial,helvetica,sans-serif">
      <span style="font-family:arial,helvetica,sans-serif">NABCEP
        Certified Solar PV Installer ®</span><br
        style="font-family:arial,helvetica,sans-serif">
      <span style="font-family:arial,helvetica,sans-serif">Owner/CEO,
        Powerfully Green</span><br
        style="font-family:arial,helvetica,sans-serif">
      <span style="font-family:arial,helvetica,sans-serif"><a class="moz-txt-link-abbreviated" href="mailto:Rebecca.Lundberg@PowerfullyGreen.com">Rebecca.Lundberg@PowerfullyGreen.com</a></span><br
        style="font-family:arial,helvetica,sans-serif">
      <span style="font-family:arial,helvetica,sans-serif">763-438-1976</span><br>
      <br>
      <br>
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