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<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>Many
times we switch to another module manufacturer as one will not fit or another
inverter manufacturer. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>PVPowered
has a more relaxed window and we have had fine success with them when SMA does
not fit. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>Cold
is the dictator and the 600 VDC threshold.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>Thanks,
Dana Orzel<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>Great
Solar Works, Inc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>web
- www.solarwork.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>E
- dana@solarwork.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>V
- 970.626.5253<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>F
- 970.626.4140<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>C
- 970.209.4076<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>"We
have been slow to give up on the myth of the Earth's generosity.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>Rather
grandly, we have overdrawn our accounts."<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>Barbara
Kingsolver - Water is life.</span><span style='font-family:"Century Gothic","sans-serif"'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Jim
MacDonald<br>
<b>Sent:</b> Monday, April 19, 2010 2:37 PM<br>
<b>To:</b> RE-wrenches@lists.re-wrenches.org<br>
<b>Subject:</b> [RE-wrenches] overfeed 7kW gridtie inverter or drop a mod per
string?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in;text-autospace:none'>For a straight
grid-tie system@ 10 degree tilt, 180 azimuth, zero/little shade, NYC avg 4.29
kWh/m<span style='font-size:12.0pt'>²/day.</span><span style='font-size:8.5pt;
font-family:"MS Shell Dlg"'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Feed an SMA7000 with (3) strings of
11 Suntech STP275’s [9.075 kWdc]<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Or<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Do strings of 10, so itd be 8.250
kWdc into the 7 kWac inverter.<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Strings of 11= 491.7 Voc; 386 Vmp<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Strings of 10= 447 Voc; 351 Vmp <o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>The tradeoff would be power
clipping at/around noon in the sunny months in the 9.075 kW scenario;<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Inverter sleeping late every
morning and retiring early in the evenings in the lowered voltage scenario.<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Trying to figure out which would
yield more kWh at the end of the year.<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Any ideas appreciated,<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'>thanks<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:#002060'>Jim MacDonald</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#002060'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:#002060'>Solar Energy Systems, LLC</span><span
style='color:#002060'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:#002060'>Brooklyn, NY 11222</span><span
style='color:#002060'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:#1F497D'><a
href="http://www.solaresystems.com/">www.solarEsystems.com</a></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#002060'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
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