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<div class="moz-cite-prefix">Wrenches,<br>
I need similar advice, please, especially a Code section citation.<br>
<br>
In 2005 we installed an Outback system for a new home in town that
was designed and installed to be a grid-backup solar home. It was,
in essence, a stand-alone system to run most of the home with the
utility serving the backup generator's role, both to provide
backup charging when needed and to run a few specific loads. The
home was built with two breaker panels side by side, with the PV
system wired between them. The meter pedestal was 150' away at the
edge of the street. The array was small at 1.32 kW.<br>
<br>
Around 2007 the interconnection terms were quite good and we
converted this system into a grid-intertied system. Doing this
involved replacing the early Outback FX2024 with a GVFX3524. We
also had to run an additional #4 conductor from the system
(inverter AC interactive output) to the meter pedestal in order to
carry interactive sell-back energy to a REC meter, which had to be
located next to the revenue meter. We ran this single conductor in
1" PVC conduit with no other conductor. Given that all AC neutrals
were properly bonded, that the conduit was non-conductive, and
that all metal parts were properly bonded, we didn't run an EGC
with this single THWN. We were permitted and and passed
inspection.<br>
<br>
Now we are adding an additional 1.3 kW of PV to the system, which
requires full permit process, of course. And in the ensuing years
the home has been annexed into the city, with its reputation for
toughness in regards to Code compliance. Our design team tells me
that we must pull that #4 out and repull it with an EGC, simply
because every current-carrying conductor must have a grounding
conductor as well. <br>
<br>
My question: What Code section applies here? Is an EGC always
required in conduit carrying a single current-carrying conductor?
<br>
<br>
We're trying to have our ducks in a row before contacting the
inspector, and have never dealt with this particular situation
before.<br>
Thank you,<br>
Allan<br>
<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>
</div>
</o:smarttagtype></o:smarttagtype></o:smarttagtype></o:smarttagtype></o:smarttagtype></div>
On 11/19/2013 11:22 AM, Dave Click wrote:<br>
</div>
<blockquote cite="mid:528BAC4D.8070607@fsec.ucf.edu" type="cite">
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<b> </b>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<b>300.3(B) Conductors of the Same Circuit.</b> All conductors of
the same circuit and, where used, the grounded conductor and all
equipment grounding conductors and bonding conductors shall be
contained within the same raceway, auxiliary gutter, cable tray,
cablebus assembly, trench, cable, or cord, unless otherwise
permitted in accordance with 300.3(B)(1) through (B)(4) [which
don't help here].
<title>National Electrical Code 2008 Edition</title>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 2013/11/19, 12:38, August Goers
wrote:<br>
</div>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">Hi
All –</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">On
a related note, I’ve become good friends with some of the
inspectors in San Francisco and they called me yesterday
with a question. Is it okay to run <u>individual</u> DC
conductors through EMT for wire management purposes? We
have always run paired positive and negative conductors in
conduit so the question had never occurred to me.
Obviously, you have to bond both ends of the conduit if it
is over 250 v. I know that AC would have induction issues
with running individual conductors but I’m not sure with
DC.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">Thanks,</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">August</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">August
Goers</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">Principal</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">Luminalt
Energy Corporation</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">o:
415.641.4000</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">m:
415.559.1525</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"><a
moz-do-not-send="true" href="http://www.luminalt.com">www.luminalt.com</a></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p>
<div>
<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"">
<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>
[mailto:<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>William Miller<br>
<b>Sent:</b> Monday, November 18, 2013 11:33 PM<br>
<b>To:</b> 'RE-wrenches'<br>
<b>Subject:</b> Re: [RE-wrenches] PV Wiring methods</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:black">Bill:</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif"">There
is no need to stuff MC4 cables into standard conduit. You
can either slot the pipe using our easy method or install
bulkhead type connectors. The connectors are readily
available. I get them from PV Cables in Northern
California..</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif""> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif"">Wire
routing problems and some solutions can be found on our
web-site:</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif""> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif""><a
moz-do-not-send="true"
href="http://millersolar.com/MillerSolar/practices/PV_wiring/_PV_Wiring2.html">http://millersolar.com/MillerSolar/practices/PV_wiring/_PV_Wiring2.html</a></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif""> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif"">Since
the industry won’t provide wire management solutions, we
are making our own. Questions: Just write or call.</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif""> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif"">William
Miller<span style="color:black"></span></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:black"> </span></p>
<div>
<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"">
<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>
[<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>frenergy<br>
<b>Sent:</b> Thursday, November 14, 2013 7:46 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] PV Wiring methods</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">William, Bill....from another Bill,</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal"> Two things: For the rest of us
(maybe it's just me?!) that's still trying to figure out
how (or why) to stuff a MC4 connector into conduit and my
hesitation in using SS wire ties for fear of the sharp
edges cutting or chaffing into cables, I'm open for
advice. Any wire I use on the roof is rated for that type
of service and I have some off-grid systems that have been
in the sun for some 25 years where the wire still looks
nearly new even when flexing it to look for
checking/cracks. It seems the wire/insulation can take
it, thus it seems like the key to "wire management is to
keep the wire from moving and off the roof, secured to the
racking, thus not compromising the insulation. </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
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