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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Drake:<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'>The voltage lost between the two points is the product of the
current flowing in the wire, and the resistance of that section of wire (times
2 depending on how you figure the distance.).<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'>Walt<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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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><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>Drake
Chamberlin<br>
<b>Sent:</b> Wednesday, April 22, 2009 7:15 AM<br>
<b>To:</b> dkatz@aeesolar.com; RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] Long MC Cable Mid String<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have scratched my head on this one before, because it
seems that two terminals bonded together by a wire are essentially the same
terminal. The theoretical voltage difference on a terminal is zero.
How do we figure a voltage drop on a wire that has near zero volt potential
between the ends of the wire. Can we really use the voltage of the entire
array to figure the drop on an interconnect between two modules? If
so, why can we do this?<br>
<br>
Thanks,<br>
<br>
Drake <br>
<br>
<br>
<br>
At 07:49 PM 4/21/2009, you wrote:<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal>David,<br>
There will be less than a 1 volt drop in 36 feet of 10 AWG at the 11 amps you
get from the Evergreen modules. I don't think anyone will notice.<br>
David<br>
<br>
David Katz<br>
<br>
<br>
David Palumbo wrote: <br>
<br>
<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Does the following series
string wiring cause a problem? With (18) Evergreen ES-A 205’s (low
voltage modules 18.4Vmp) in series feeding a grid tie inverter with a long
series connector in the middle of the string. (2) Top Of Pole 9 module
mounts with the series connection from module #8 on the first pole to module #9
on the second pole. This MC cable connection would be, about, 36 feet in length
to go 10’ down the pole below grade 18” for 13’ and back up the second pole 10’
(in conduit all the way) .<br>
<br>
Will this extra long series wire cause problems?<br>
<br>
I could use other modules of course but that would raise the cost per watt by
70 cents.<br>
<br>
Dave<br>
<br>
<i>David Palumbo, President<br>
Independent Power LLC<br>
462 Solar Way Drive<br>
Hyde Park, VT 05655<br>
</i>NABCEP Certified<br>
<i><a href="http://www.independentpowerllc.com">www.independentpowerllc.com</a>
<br>
</i> <o:p></o:p></p>
<pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre> <o:p></o:p></pre>
<p class=MsoNormal>_______________________________________________<br>
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<p>Drake Chamberlin<br>
Athens Electric<br>
OH License 44810<br>
CO License 3773<br>
740-448-7328<br>
740-856-9648 <br>
<br>
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