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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Lee,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Your idea about 2 strings of 16 is fine on a Fronius IG2000. The
voltage is correct and the inverter power is more than sufficient. There is no
difference at all in the way module bypass diodes were done then (early 1990s)
as now. You want to check the Voc of each module to make sure there are no
failures, but beyond that, everything else is the same. They are not on the CEC
list because they predate the list.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Bill.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>David
Katz<br>
<b>Sent:</b> Wednesday, November 18, 2009 1:28 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] strings of older solar panels<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Lee<br>
I would be inclined to use groups of 4 modules wired for 24 volts connected to
an Enphase inverter. This will give you less problem with mismatch loss.
256 watts is high but they are probably a bit lower in output that that.<br>
David<o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>David
Katz</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Chief
Technical Officer</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>AEE
Solar</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>1155
Redway Drive</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>P.O.
Box 339</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Redway,
CA 95560</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Tel
(707) 825-1200</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Fax
(707) 825-1202</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><a
href="mailto:david@aeesolar.com">dkatz@aeesolar.com</a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><a
href="http://www.aeesolar.com/">www.aeesolar.com</a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif"'>DISCLAIMER:
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<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
Solar Plexus wrote: <o:p></o:p></p>
<p class=MsoNormal>Hi Wrenches. <o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span class=apple-tab-span> </span>I have a customer
with 32 of the Solarex MSX-64 solar panels an a battery-based system. He
wants to go batteryless inverter. So I am looking at 2 strings of
16 in series. But the solar panel spec sheet doesn't say anything
about <span class=apple-style-span><u>system</u></span> voltage rating.
Can I do this?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span class=apple-tab-span> </span> If one
solar panel in the string is shaded, does it see the full string voltage of
around 280 volts? Is there something in the way new panels are made that
makes them more able to handle this voltage, or is it just that they are now
tested for it?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span class=apple-tab-span> </span>My guess is this
request may be happenning a fair amount. Is there a reason these panels
are not listed on the California GoSolr website?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>Lee Tavenner<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Solar Plexus<o:p></o:p></p>
</div>
</div>
<pre><o:p> </o:p></pre><pre style='text-align:center'>
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