<div dir="auto">Not sure your exact situation, but a 230.6 argument could potentially be made, as this exemption is often applied to \u201cother than service conductors\u201d. Installed under min 2\u201d of concrete can be considered \u201coutside of the building\u201d. </div><div dir="auto"><br></div><div dir="auto"> <br><div class="gmail_quote gmail_quote_container" dir="auto"><div dir="ltr" class="gmail_attr">On Wed, May 20, 2026 at 2:05\u202fPM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">I had a similar problem with PVC pre-installed through a roof. It was big enough pipe to run flex through and pull our PV runs. </div><div dir="auto"><br></div><div dir="auto">As to the requirement to use metallic, I haven\u2019t had my second cup of coffee yet so I won\u2019t comment.</div><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><br>William Miller<br>Miller Solar.com<br>805-438-5600<br><a href="http://www.millersolar.com" target="_blank">www.millersolar.com</a><br></div></div></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 20, 2026 at 10:36\u202fAM Mick Abraham via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hi, Mechanics ~ </div><div><br></div><div>The general contractor put in a 2" PVC pipe before pouring the slab. The pipe has a 90 degree sweep so there's a vertical pipe stub. </div><div>He thought there would be no code inspections for this remote property... oops. </div><div><br></div><div>I now must use this plastic pipe for incoming PV wires. These wires will terminate on a MidNite Power MN15\u201112KW\u2011AIO, so question one:</div><div>Without embarrassing myself, can I argue that this qualifies for the exemption as a PV ICS (Photovoltaic Integrated Control System)? </div><div>The PV arrays will be on top of an open horse shed, so I don't plan on any form of "rapid shutdown". </div><div><br></div><div>Assuming that the above exemption won't get me off the hook, what are your suggestions for retrofit? My five wires could comfortably fit 1" trade size EMT</div><div>conduit. If I cut the PVC stub then glue on a male adapter (so I could mount a metal box low to the floor), there's still some unprotected plastic</div><div>due to the hub of the male adapter. </div><div><br></div><div>Also: what would have been better initial tradecraft in a non-retrofit slab situation, assuming that one wants to use PVC for most of the pipe run while still satisfying</div><div>NEC 690.31(D) (1)? </div><div><br></div><div>Thanks in advance, Mechanix. "The Wrench List is the Bomb!"</div><div><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Mick Abraham, Proprietor<br><a href="http://www.abrahamsolar.com" target="_blank">www.abrahamsolar.com</a><br><br></div><div>Cell phone or for text messaging: 970-946-6584</div></div></div></div></div>
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