[RE-wrenches] Oddball wire request
Mac Lewis
maclewis1 at gmail.com
Thu Oct 10 07:45:18 PDT 2013
Hi Allan,
What about doing splicing in the j-box with float switch cable? Landing
your homerun cable to one of the panel outputs, then splicing with a return
homerun from your next panel? Each conductor would function as either a
series connection or a homerun. Not ideal, but seems like it will work.
Good luck
On Thu, Oct 10, 2013 at 9:19 AM, frenergy <frenergy at psln.com> wrote:
> **
> Alan,
> At 53 watts, we're not talking about much in the way of amps....I
> don't even know but isn't there a 14 or even 16 gauge that would have the
> OD you're looking for and still carry the current, easily, with short runs
> to a combining j-box. I just found some 14 gauge at Nassua Electrical, .2"
> OD.
>
> Just a thought.
>
> Bill Battagin
>
>
> ----- Original Message -----
> From: <penobscotsolar at midmaine.com>
> To: <Allan at positiveenergysolar.com>; "RE-wrenches" <
> re-wrenches at lists.re-wrenches.org>
> Sent: Thursday, October 10, 2013 3:52 AM
> Subject: Re: [RE-wrenches] Oddball wire request
>
> > Hi Allan,
> > Is it possible to use 1/2" carflex connectors and nm carflex from panel
> > to panel? You could then use THWN anywhere you wanted. This is what we
> > used to do with all our systems back in the day....
> >
> > Daryl
> >
> >
> >> <html>
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> >>
> >> <meta http-equiv="content-type" content="text/html;
> >> charset=ISO-8859-1">
> >> </head>
> >> <body text="#000000" bgcolor="#FFFFFF">
> >> 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>
> >> <div class="moz-signature">-- <br>
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> >> <p class="MsoNormal"><b>Allan <span
> >> class="SpellE">Sindelar</span></b><br>
> >> <span style="font-size:10.0pt"><a
> >> href="
> mailto:Allan at positiveenergysolar.com"><u><span<Allan at positiveenergysolar.com%22%3E%3Cu%3E%3Cspan>
> >> style="color:#000099">
> Allan at 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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> >> </body>
> >> </html>
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--
Mac Lewis
*
"Yo solo sé que no sé nada." -Sócrates
*
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