<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hi Zeke,<div><br></div><div>you are correct in regards to parking structures. </div><div>See the following </div><div>2023 NEC</div><div><br></div><div>690.12 </div><div>exemption #2 </div><div><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Nov 19, 2025, at 12:40 PM, Zeke Yewdall via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:</div><br class="Apple-interchange-newline"><div><div dir="ltr"><div>Yes, you are right -- even a non occupied garage or shed would be required to have it if it's not solely for the PV system under exception #1. But I was thinking of Exception #2: PV equipment and circuits installed on nonenclosed detached structures including but not limited to parking shade structures, carports, solar trellises, and similar structures shall not be required to comply with 690.12. That seems to pretty clearly cover ground mounts.</div><div><br></div><div>Also we have the exception that conductors originating from arrays not attached to buildings, that terminate on the exterior of buildings don't need to be considered as controlled conductors. If they're going into an inverter inside a building but the PV array is not on the building, does an external accessible DC disconnect count as ending those conductors, and the output from the disconnect is no longer a controlled conductor either?</div><div><br></div><div>Zeke</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Nov 19, 2025 at 8:24 AM William Miller <<a href="mailto:william@millersolar.com">william@millersolar.com</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">To paraphrase: If PV circuits are located on or in any structure RSS is required. Exception: if the structure’s sole purpose is to house solar equipment then RSS is not required. </div><div dir="auto"><br></div><div dir="auto">If your inverter is in a shed and there is one rake in that shed, RSS is required. <br clear="all"><br clear="all"><div dir="auto"><div dir="ltr" class="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><br></blockquote></div></div>
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