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Wrenches,<br>
I do a fair amount of work on ancient systems, just because there's
been off grid here for decades. I'm rewiring several old arrays for
my next door (meaning < 1/4 mile away) neighbor. The particular
array has six 53W Solec modules wired as three two-module 24V pairs,
on a Zomeworks tracker so old that it has aluminum rails and
attached freon canisters instead of the integral square tubes. Both
modules and tracker continue to work well, but the wiring is so
degraded from sun exposure that's it's bare in spots, and this is
what I want to fix.<br>
<br>
Each module has a tiny j-box - 3" x 3" x 7/8" deep. Each j-box has a
single 3/8" cord grip bushing (CGB). Each bushing has two #10
conductors coming out of the single hole in the CGB. The O.D. of
each wire is about the same as that of THWN. The problem is that the
single hole in the CGB is only large enough to fit this diameter.
USE-2 is too large, and modern PV wire is way too large. <br>
<br>
I bought a dozen replacement 3/8" CGBs from Del City, but the
matching lock rings are too large to fit inside the j-boxes. I'd be
cautious about using a narrow Unibit to drill an additional hole in
each j-box anyway, given that the holes would be so close to the
backsheet. <br>
<br>
The easiest solution would be to find some sunlight-resistant,
wet-rated single-conductor wire in #10 or #12 that has an insulation
O.D. about the same as THHN/THWN. Any ideas, please? Code is not an
issue in this instance - I just want a solution that works.<br>
<br>
I thought about using float switch cable, which is UV-resistant,
wet-rated, direct-burial-rated type TC. We keep plenty in stock for
signal circuits, and it fits and is strong. The problem is that I
need single conductors, because each module will have one series
conductor and one output conductor, and they run to different
locations. <br>
<br>
Are there any better ideas out there?<br>
Thanks, Allan<br>
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<div class="Section1">
<p class="MsoNormal"><b>Allan <span class="SpellE">Sindelar</span></b><br>
<span style="font-size:10.0pt"><a
href="mailto:Allan@positiveenergysolar.com"><u><span
style="color:#000099">Allan@positiveenergysolar.com</span></u></a></span><br>
<span style="font-size:10.0pt">NABCEP Certified PV
Installation Professional<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder, <b>Positive Energy, Inc.<o:p></o:p></b></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">A
Certified B <span class="SpellE">Corporation<sup><span
style="font-size:7.5pt">TM</span></sup></span><br>
<st1:address w:st="on"><st1:street w:st="on">3209
Richards Lane</st1:street><br>
<st1:city w:st="on">Santa Fe</st1:city>, <st1:state
w:st="on">New Mexico</st1:state> <st1:postalcode
w:st="on">87507</st1:postalcode></st1:address><br>
<b>505 424-1112 office 780-2738 cell</b><br>
<a href="http://www.positiveenergysolar.com/"
target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"><span
style="mso-spacerun:yes"> </span></span></p>
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