<div dir="ltr"><div dir="ltr"><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I agree. It is not a separate service. It is a "tap" of the existing service (I use that term loosely here). The additional service disconnect for the supply side interconnection should have L1, L2, and N connected ahead of the premises main disconnect with no EGC. There should be a N-G bonding jumper in the PV service disconnect. Then there should be no N-G bonds downstream of both the premises main disconnect and the PV service disconnect.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Basically, it's the same as two main disconnects running from a meter enclosure. Each of the service disconnects has a N-G bond required.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Some AHJs (the crazy ones) require an EGC between the enclosure where the supply side connection is made and the PV service disconnect. This creates a parallel fault path, and should not be allowed, in my humble opinion.</div></div><div><br></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Now it sounds like you might be doing a partial home backup. The issue there is that sometimes the loads or enclosures you moved over the backup load panel have inadvertent N-G bonds. Sometimes it's as simple as someone who got creative and used a ground as a neutral in a switch box. I say simple, but that can be hard to track down.</div><br></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">When Midnite <span style="font-family:Arial,Helvetica,sans-serif">said to remove it from the inverter distribution panel, they were probably talking about the protected loads panel.</span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif"><br></span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif">I think more information is needed.</span></div><br></div><div><br></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Oct 23, 2025 at 11:03 AM Tyrone Houck 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"><div>My interpretation, and the way it was explained to me by both Ryan Mayfield and Kyle Bolger(several years ago at this point, popular opinion may have changed since). Is that it is not a seperate service.</div><div dir="auto"> It is however required to have a ground-neutral bond( though in my opinion pointless and redundant as there is a bond in the enclosure where the tap is made). If it gives you any issue, ensure as close to equal potential to the grounding electrode as possible(and make sure your neutral is appropriately sized). I personally don't see the point but it is an NEC requirement </div><div><br></div><div><br> </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 23, 2025, 6:08 AM Dave Tedeyan via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer" 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 All, </div><div><br></div><div>For years I have understood that when doing a supply side connection, you are supposed to bond the neutral to ground in the solar service disconnect. I have a Midnite AIO system with two inverters (set up as a supply side connection) that recently was getting a CA-DC link Overvoltage error. When talking to Midnite, their first response was to make sure that there was only one N-G bond in the whole system. When I mentioned that the solar is a separate service and thus there is a N-G bond in both the main panel and the inverter distribution panel, they said to remove it from the inverter distribution panel. I want to make the system work right, but I also am hesitant to do something against how I have understood the NEC to be for a long time. I am curious if you all have thoughts on this or run into a similar situation.</div><div><br></div><div>Cheers, </div><div>Dave</div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><br style="color:rgb(34,34,34)"><div dir="ltr" style="color:rgb(34,34,34)"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"></div></div></div><div dir="ltr"><table cellpadding="0" cellspacing="0" style="border-spacing:0px;border-collapse:collapse;color:rgb(68,68,68);width:525px;font-size:11pt;font-family:Arial,sans-serif"><tbody><tr><td width="125" valign="top" rowspan="6" style="padding:0px 10px 0px 0px;font-size:10pt;border-right:1px solid rgb(236,189,0);width:125px;vertical-align:top"><a href="https://www.sungineersolar.com/" style="color:rgb(51,122,183);background-color:transparent" rel="noreferrer noreferrer" target="_blank"><img border="0" alt="Logo" width="105" src="https://sungineersolar.com/wp-content/uploads/2019/08/Logo-Image-Only-1.png" style="border: 0px; vertical-align: middle; width: 105px; height: auto;"></a></td><td style="padding:0px 0px 0px 10px"><table cellpadding="0" cellspacing="0" style="border-spacing:0px;border-collapse:collapse;background-color:transparent"><tbody><tr><td valign="top" style="padding:0px 0px 5px 10px;width:400px;vertical-align:top"><span style="color:rgb(236,189,0);font-size:11pt;font-weight:700">Dave Tedeyan, P.E.<br></span><span style="font-size:11pt;font-weight:700"><font color="#ecbd00">Owner | Sungineer Solar</font><br></span></td></tr><tr><td valign="top" style="padding:5px 0px 5px 10px;font-size:10pt;vertical-align:top;line-height:17px"><span style="color:rgb(236,189,0)"><span style="font-weight:700">p: </span></span><span style="font-size:10pt;color:rgb(0,0,0)">he | him | his</span><span style="color:rgb(236,189,0)"><span style="font-weight:700"><br>a: </span></span><span style="font-size:10pt;color:rgb(0,0,0)"><a href="https://www.google.com/maps/search/1653+Slaterville+Rd.+%C2%A0+%7C%C2%A0Ithaca,+NY+14850?entry=gmail&source=g" rel="noreferrer" target="_blank">1653 Slaterville Rd.</a></span><a href="https://www.google.com/maps/search/1653+Slaterville+Rd.+%C2%A0+%7C%C2%A0Ithaca,+NY+14850?entry=gmail&source=g" rel="noreferrer" target="_blank"> </a><span style="font-size:10pt;color:rgb(0,0,0)"><a href="https://www.google.com/maps/search/1653+Slaterville+Rd.+%C2%A0+%7C%C2%A0Ithaca,+NY+14850?entry=gmail&source=g" rel="noreferrer" target="_blank">| Ithaca, NY 14850</a></span><br><span style="color:rgb(236,189,0)"><span style="font-weight:700">w:</span></span><a href="http://www.sungineersolar.com/" rel="noopener noreferrer noreferrer" style="color:rgb(51,122,183);background-color:transparent" target="_blank"><span style="font-size:10pt;color:rgb(0,0,0)"> www.sungineersolar.com</span></a><br><span style="color:rgb(236,189,0)"><span style="font-weight:700">c:</span></span><span style="font-size:10pt;color:rgb(0,0,0)"> (607) 270-0370</span></td></tr></tbody></table></td></tr></tbody></table></div></div></div></div></div></div>
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