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<p>Are you required to meet the latest code? In many retrofit/
replacement situations, you are only required to meet the code
requirements of the date the original system was installed. Metal
vs PVC is dependent on the code version you are meeting. Was
metal a NEC 2008 requirement? I don't have my old code versions
here. When metal is required, its only from the point of entry
into the building to the inverter, so if you mount the inverter
outdoors, it doesn't have to change either. I've got lots of
legacy systems that have PVC on the inside, and never had an
issue. Seems like more trouble to change out than its worth, but
if the AHJ requires it, then yes.<br>
</p>
<p>Also, you didn't mention if the array was roof or ground mounted,
which would effect the 690.12 interpretation. <br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 6/12/19 12:49 PM, Kirk Herander
wrote:<br>
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<p class="MsoNormal">All,<o:p></o:p></p>
<p class="MsoNormal">I am retrofitting an existing PV system
with Storedge / LG Chem / optimizers and updating some code
issues. I am replacing the PVC conduit carrying the array
conductors into the building with metallic raceway to the
point of DC disconnect(i.e. the inverter). The array is
presently connected to an Outback inverter / FM60 controller /
AGM batteries (grid tied with backup). If I am interpreting
NEC 690.12 etc. correctly, a DC disconnect outdoors is
generally not required because of new rapid shutdown
capability, amongst other reasons. Would this be the case
regardless of metal or plastic conduit penetrating the
building? The system at present has no outdoor DC disco, and
to me that\u2019s a violation in addition to lack of metallic
raceway entering the building. Thanks.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt">Kirk
Herander</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt">Owner|Principal,
VT Solar, LLC </span></b><o:p></o:p></p>
<p class="MsoNormal"><b><i><span style="font-size:12.0pt">Celebrating
our 28<sup>th</sup> Anniversary 1991-2019</span></i></b><o:p></o:p></p>
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moz-do-not-send="true"><span style="color:blue">www.vermontsolarnow.com</span></a></span></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">dba Vermont
Solar Engineering</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">NABCEP<sup>TM
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