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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>
<blockquote type=cite class=cite cite="">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>
<blockquote type=cite class=cite cite="">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> <br><br>
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Drake Chamberlin<br>
Athens Electric<br>
OH License 44810<br>
CO License 3773<br>
740-448-7328<br>
740-856-9648 </body>
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