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    <p>First, its the added cost of the disconnecting combiner, RT
      breakers, control boards, Main initiator, and extra labor for
      wiring and testing.  I'd say it ads another $2 to $3K of cost. 
      Not a big deal on large systems but for a smaller off grid project
      in the $10K range, its a huge increase in cost.  Folks are just
      going to go DIY with junk off the internet, and the code is now
      under the bus.<br>
    </p>
    <p>We've successfully argued that 690.12 only applies to the PV
      array circuit, not the inverter and battery output.  Which has at
      least kept refrigerators and heating system on during a trip.
      However, because charge controllers hold residual voltage in
      capacitors after the array is disconnected, we have had to add RT
      breakers at the charge controllers to comply with the 30 v in 10
      sec rule.  <br>
    </p>
    <p>My main issue is safety: if the system trips, the customer must
      go onto the roof to manually reset the combiner box to restore
      power. IMO, we have inadvertently traded customer safety in the
      name of fire fighter safety, not a fair bargain at all.  There are
      numerous nuisance faults that require reset, (CAT 5 loose
      connection or induced noise, faulty 9 v battery, naughty neighbor)
      Firefighters will probably only ever be on site to strap our poor
      customer to a back board after they fall off the roof in the snow
      trying to reset their new 690.12 compliant system.<br>
    </p>
    <pre class="moz-signature" cols="72">R. Ray Walters
Chief Technical Officer, RemoteSolar.com
BS Mech Engineering, 1988
Former NABCEP Certified, 2004-2016
Licensed Master ELectrician, Colorado
303 505-8760</pre>
    <div class="moz-cite-prefix">On 3/26/17 9:22 AM, Dan Fink wrote:<br>
    </div>
    <blockquote
cite="mid:CAF+3LnfrCiiomkA6fgL5CFZ++j5kTeFRB-d-W=V2uFwGZQCxvQ@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hello Ray -- Can you elaborate on why these
        battery-based projects are getting killed here locally? Is it
        the misinterpretation by AHJs that 690.12 has to disconnect the
        inverter from the battery bank with giant shunt-trip breakers?
        If that were the case...backup generators would have to be
        controlled by rapid shutdown too, and I don't think that can of
        worms has been opened yet.<br>
        <div class="gmail_extra"><br clear="all">
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                                <div><span
                                    style="font-size:12.8000001907349px">Dan
                                    Fink</span>
                                  <div
                                    style="font-size:12.8000001907349px">Professor
                                    of Solar Energy Technology, Ecotech
                                    Institute</div>
                                  <div
                                    style="font-size:12.8000001907349px">IREC
                                    Certified Instructor™ for: </div>
                                  <div
                                    style="font-size:12.8000001907349px">~
                                    PV Installation Professional</div>
                                  <div
                                    style="font-size:12.8000001907349px">~
                                    Small Wind Installer</div>
                                  <div
                                    style="font-size:12.8000001907349px">Executive
                                    Director, Buckville Energy</div>
                                  <div
                                    style="font-size:12.8000001907349px">NABCEP
                                    Registered Continuing Education
                                    Providers™<br>
                                    <a moz-do-not-send="true"
                                      href="tel:970.672.4342"
                                      value="+19706724342"
                                      style="color:rgb(17,85,204)"
                                      target="_blank">970.672.4342</a></div>
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          <br>
          <div class="gmail_quote">On Sat, Mar 25, 2017 at 8:04 PM, Ray
            <span dir="ltr"><<a moz-do-not-send="true"
                href="mailto:ray@solarray.com" target="_blank">ray@solarray.com</a>></span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div bgcolor="#FFFFFF" text="#000000">
                <p>Not to muddy the waters, but how does the SMA system
                  deal with 690.12 Rapid Shutdown requirements in OG and
                  GTB arrangements?  690.12 has been killing battery
                  based projects left and right here in Colorado.</p>
                <p>Thanks,<br>
                </p>
                <pre class="m_-5278478088777178352moz-signature" cols="72">R. Ray Walters
Chief Technical Officer, RemoteSolar.com
BS Mech Engineering, 1988
Former NABCEP Certified, 2004-2016
Licensed Master ELectrician, Colorado
<a moz-do-not-send="true" href="tel:%28303%29%20505-8760" value="+13035058760" target="_blank">303 505-8760</a></pre>
                <div>
                  <div class="h5">
                    <div class="m_-5278478088777178352moz-cite-prefix">On
                      3/25/17 6:46 PM, Jeff Clearwater wrote:<br>
                    </div>
                    <blockquote type="cite">
                      <div
                        style="font-family:Helvetica,Arial,sans-serif"><span>Hi
                          Howie,<br>
                          <br>
                          So Jay found this from previous posts
                          (below).  So apparently the -40 series will
                          work in Off-grid mode (as long as you program
                          the SBs separately to be in OG) but won't do
                          the switching of modes necessary for grid-tie
                          backup.  I plan on a call to SMA tech support
                          Monday morning to get to the bottom of what
                          exactly is lost without the RS485 comm.  And
                          to see if TLs are still going to work as the
                          new SIs tech sheet shows they are not
                          supported.  why I have no idea but I intend to
                          find out.<br>
                          <br>
                          hope that helps.<br>
                          <br>
                          Best,<br>
                          <br>
                          Jeff<br>
                          <br>
                          <blockquote type="cite">
                            <div>Begin forwarded message:</div>
                            <br
                              class="m_-5278478088777178352Apple-interchange-newline">
                            <div
style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span
style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif;color:rgba(0,0,0,1.0)"><b>From:
                                </b></span><span
                                style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif">Drake <<a
                                  moz-do-not-send="true"
                                  href="mailto:drake.chamberlin@redwoodalliance.org"
                                  target="_blank">drake.chamberlin@<wbr>redwoodalliance.org</a>><br>
                              </span></div>
                            <div
style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span
style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif;color:rgba(0,0,0,1.0)"><b>Subject:
                                </b></span><span
                                style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif"><b>Re:
                                  [RE-wrenches] SMA US 40 & AC
                                  coupling</b><br>
                              </span></div>
                            <div
style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span
style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif;color:rgba(0,0,0,1.0)"><b>Date:
                                </b></span><span
                                style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif">March 13,
                                2017 at 10:23:56 AM PDT<br>
                              </span></div>
                            <div
style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span
style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif;color:rgba(0,0,0,1.0)"><b>To:
                                </b></span><span
                                style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif">RE-wrenches
                                <<a moz-do-not-send="true"
                                  href="mailto:re-wrenches@lists.re-wrenches.org"
                                  target="_blank">re-wrenches@lists.re-<wbr>wrenches.org</a>><br>
                              </span></div>
                            <div
style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span
style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif;color:rgba(0,0,0,1.0)"><b>Reply-To:
                                </b></span><span
                                style="font-family:-webkit-system-font,Helvetica
                                Neue,Helvetica,sans-serif">RE-wrenches
                                <<a moz-do-not-send="true"
                                  href="mailto:re-wrenches@lists.re-wrenches.org"
                                  target="_blank">re-wrenches@lists.re-<wbr>wrenches.org</a>><br>
                              </span></div>
                            <br>
                            <span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">I
                              talked with Tim at SMA today, and the new 
                              Sunny Boy inverters will  provide taper
                              charging with the Sunny Islands even
                              though no RS 485 communication is
                              available. The Sunny Boys need to be
                              programmed in the off grid mode, and the
                              Sunny Islands will take care of the UL
                              1741 requirements.<span
                                class="m_-5278478088777178352Apple-converted-space"> </span></span><br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            <br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            <span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">The
                              graph below shows the relation between
                              frequency shift and % power produced by
                              the Sunny Boy inverters.<span
                                class="m_-5278478088777178352Apple-converted-space"> </span></span><br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            <img alt="Emacs!"
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"
id="m_-5278478088777178352C98CA293-90AE-4981-A424-3D98EA3A5CE4"
                              src="cid:part7.4E10CA2B.01F17412@solarray.com"><span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important"><span
class="m_-5278478088777178352Apple-converted-space"> </span></span><br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            <br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            <span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">Drake
                              Chamberlin</span><br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            <i
style="font-family:Helvetica;font-size:12px;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">Athens
                              Electric LLC<br>
                              OH License 44810<br>
                              CO License 3773<br>
                              NABCEP Certified Solar PV<span
                                class="m_-5278478088777178352Apple-converted-space"> </span><br>
                              <a moz-do-not-send="true"
                                href="tel:%28740%29%20448-7328"
                                value="+17404487328" target="_blank">740-448-7328</a><br>
                            </i><a moz-do-not-send="true"
                              href="http://athens-electric.com/"
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"
                              target="_blank">http://athens-electric.com/</a><span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important"><span
class="m_-5278478088777178352Apple-converted-space"> </span></span><br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            <span
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">At
                              11:36 AM 3/10/2017, you wrote:</span><br
style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                            I just checked with SMA and they do not have
                            an RS485 card for the -40 inverters. What
                            this means is that you can set them up to be
                            permanently in off grid mode where the SB
                            will follow the frequency shift of the SI,
                            ok for an off grid system. But for grid tie
                            with backup, the SB will not communicate
                            with the SI and will not change the SB to
                            off grid mode. It will still work like other
                            generic AC coupled systems where the
                            frequency shift will cause the SB inverter
                            to drop off line, but as far as I know no
                            throttling back will happen.<br>
                            <br>
                            Brad<br>
                          </blockquote>
                          <br>
                          <br>
                          Howie Michaelson wrote:</span><br>
                        <blockquote type="cite">
                          <div dir="auto">I'm confused. Does this mean
                            the -40 series are not compatible with SI
                            off grid mode? Or they don't adjust output
                            due to frequency shift? Or?
                            <div dir="auto"><br>
                              <div data-smartmail="gmail_signature"
                                dir="auto">Howie<br>
                                Howie Michaelson<br>
                                NABCEP Certified Solar PV Installer™<br>
                                <br>
                                Sun Catcher<br>
                                Renewable Energy Systems Sales and
                                Service<br>
                                VT Solar Electric Incentive Partner<br>
                                <a moz-do-not-send="true"
                                  href="tel:%28802%29%20272-0004"
                                  value="+18022720004" target="_blank">802-272-0004</a></div>
                            </div>
                          </div>
                          <div class="gmail_extra"><br>
                            <div class="gmail_quote">On Mar 25, 2017
                              7:59 PM, "Tump" <<a
                                moz-do-not-send="true"
                                href="mailto:tump@swnl.net"
                                target="_blank">tump@swnl.net</a>>
                              wrote:<br type="attribution">
                              <blockquote class="gmail_quote"
                                style="margin:0 0 0 .8ex;border-left:1px
                                #ccc solid;padding-left:1ex">
                                <div style="word-wrap:break-word">Jeff
                                  the bad news is yer outa luck BUT they
                                  "had a work around" that was discussed
                                  on the list a few weeks ago. I looked
                                  quickly but didn’t see it posted. You
                                  were going to install a RS 485 card/
                                  module that had the soft ware to make
                                  it work. I found this out just as
                                  these “Newest latest n greatest
                                  inverters" were just coming out,
                                  looked at the manual, and much to my
                                  disappointment I had to send it back
                                  and educate my salesperson to this.
                                  Lucky for me I was able to get the TL
                                  series. Ill keep on looking, if you
                                  don’t have any luck I do have a
                                  contact at SMA…. at least he was there
                                  2 weeks ago, contact me off list. Tump
                                  <div>
                                    <div>
                                      <blockquote type="cite">
                                        <div>On Mar 25, 2017, at 12:10
                                          PM, Jeff Clearwater <<a
                                            moz-do-not-send="true"
                                            href="mailto:jeffc@villagepowerdesign.com"
                                            target="_blank">jeffc@villagepowerdesign.com</a>>
                                          wrote:</div>
                                        <br
class="m_-5278478088777178352m_-8682180123997891521Apple-interchange-newline">
                                        <div>
                                          <div
                                            style="font-family:Helvetica,Arial,sans-serif"
                                            bgcolor="#FFFFFF"
                                            text="#000000">
                                            <div
                                              style="font-family:Helvetica,Arial,sans-serif">All,<br>
                                              <br>
                                              Can anyone confirm for me
                                              that the SUNNY BOY 3.0-US
                                              / 3.8-US / 5.0-US / 6.0-US
                                              / 7.0-US / 7.7-US series <span
                                                style="font-weight:bold">is
                                                or is not</span>
                                              supported by the Sunny
                                              Island in off-grid AC
                                              coupling mode?  The
                                              technical paper on the
                                              subject here <a
                                                moz-do-not-send="true"
                                                href="http://files.sma.de/dl/7910/SB-OffGrid-TI-US-en-18.pdf"
                                                target="_blank">http://files.sma.de/dl/7910/SB<wbr>-OffGrid-TI-US-en-18.pdf</a>  
                                              does not list them but I'm
                                              hoping it's cause that
                                              paper is dated Feb '16.<br>
                                              <br>
                                              I sure hope they are
                                              because that paper shows
                                              they discontinued support
                                              the the  SUNNY BOY
                                              3000TL-US / 3800TL-US /
                                              4000TL-US / 5000TL-US /
                                              6000TL-US / 7000TL-US /
                                              7700TL-US series!  Why!??<br>
                                              <br>
                                              Hope you have good news
                                              for me!<br>
                                              <br>
                                              Best,<br>
                                              <br>
                                              Jeff<span></span><br>
                                              <br>
                                              <div
                                                class="m_-5278478088777178352m_-8682180123997891521moz-signature">--
                                                <br>
                                                <span><span
                                                    style="font-family:monospace">Jeff
                                                    Clearwater</span><br
style="font-family:monospace">
                                                  <span
                                                    style="font-family:monospace">
                                                    Village Power Design</span><br
style="font-family:monospace">
                                                  <span
                                                    style="font-family:monospace">
                                                    Renewable Energy
                                                    Design &
                                                    Installation</span><br>
                                                  Ecovillage Design
                                                  Consultant<br
                                                    style="font-family:monospace">
                                                  <span
                                                    style="font-family:monospace"></span><br
style="font-family:monospace">
                                                  <span
                                                    style="font-family:monospace">Licensed
                                                    Solar Contractor in
                                                    CA - C-46</span><br
style="font-family:monospace">
                                                  <span
                                                    style="font-family:monospace">
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class="m_-5278478088777178352m_-8682180123997891521moz-txt-link-abbreviated"
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                                                        moz-do-not-send="true"
href="tel:%28413%29%20559-9763" value="+14135599763" target="_blank">413-559-9763</a></span></span><br>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
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                                                          <div>
                                                          <div>   <span
style="font-weight:normal;color:rgb(45,44,250)">             </span><span>Solarwinds
                                                          Northernlights</span>   <b
style="font-weight:normal"><i>    </i></b></div>
                                                          <div><span><b><i> 
                                                               Serving
                                                          Mid Coast
                                                          Maine &
                                                          Northern
                                                          California</i></b></span><span
style="font:normal normal normal 10px/normal Arial"><b><i><br>
                                                          </i></b></span><b><i> 
                                                                       
                                                                   <a
                                                          moz-do-not-send="true"
href="tel:%28207%29%20832-7574" value="+12078327574" target="_blank">207-832-7574</a>   Cl.
                                                          <a
                                                          moz-do-not-send="true"
href="tel:%28610%29%20517-8401" value="+16105178401" target="_blank">610-517-8401</a>                  <wbr>            </i></b></div>
                                                          <div><span
                                                          style="color:rgb(45,44,250)"><b><i> 
                                                                       
                                                                        </i></b></span><b><i>Blair
                                                          "TUMP" May</i></b></div>
                                                          <p><span
                                                          style="color:rgb(0,0,0)"><b><i> 
                                                                     
                                                           ******** 
                                                          MAINE'S
                                                          CHARTER
                                                          ********<br>
                                                           </i></b></span><b><i>                 
                                                           </i></b><span
style="text-decoration:underline"><b><i>  NABCEP    "Certified PV
                                                          Installer"</i></b></span><span
style="text-decoration:underline;color:rgb(0,0,0)"><b><i> <br>
                                                          </i></b></span><span
style="color:rgb(0,0,0)"><b><i>   <br>
                                                                       
                                                          ******** 
                                                          MAINE'S
                                                          CHARTER
                                                          ********<br>
                                                                    </i></b></span><span
style="text-decoration:underline"><b><i>        Trace Xantrex
                                                          "Certified"
                                                          Dealer /
                                                          Installer"</i></b></span></p>
                                                          <div><br>
                                                          </div>
                                                          </div>
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</pre>
        </blockquote>
        

        

        <div class="m_-5278478088777178352moz-signature">-- 

          <span><span style="font-family:monospace">Jeff Clearwater</span>

            <span style="font-family:monospace">
              Village Power Design</span>

            <span style="font-family:monospace">
              Renewable Energy Design & Installation</span>

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              Solar PV Installer</span>

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              Contractor in CA - C-46</span>

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            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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