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<p>Make sure the old modules are resistant to Potential Induced Degradation (PID). The new transformerless inverters can induce PID on non PID resistant modules. This issue surfaced with the installation of inverters that did not solidly ground either conductor. </p>
<p>Drake Chamberlin</p>
<p>Athens Electric LLC</p>
<p>Ohio Electrical Contractor’s License 44810</p>
<p>CO Master Electrician’s License 4526</p>
<p>NABCEP Certified PV Installation Professional</p>
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<p id="reply-intro">On 2021-05-18 21:22, Jerry Shafer wrote:</p>
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<div dir="auto">Wrenches
<div dir="auto">I would also be surprised if the old 2500 would last very long.</div>
<div dir="auto">Better off with a SB5.0-41 and if you need RSD then add that in also.</div>
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<div class="v1gmail_attr" dir="ltr">On Tue, May 18, 2021, 12:15 PM Dave Angelini Offgrid Solar <<a href="mailto:offgridsolar@sti.net" rel="noreferrer">offgridsolar@sti.net</a>> wrote:</div>
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<p>Probably if it is old it does not have these recent Certifications and UL requirements. Just gave these to my local AHJ.</p>
<p>IEEE 1547, UL 1741-SA, Rule 21, Rule 14H, PREPA, and CSA 107.1</p>
<p>Product Certification History Project Date Description 80049402 2020-09-18 Update to report 70194014 to meet grid support function according to CA Rule 21 for 120Vac output configuration. 80036281 2020-03-15 Update report 70194014 to include UL1741 CRD SA17/18 UL 1741(California Rule 21 Phase 3 Function 2 and Function 3) for Model XW Pro 6848 NA. 80020062 2019-10-30 Update report 70194014 to include firmware upgrade for Model XW Pro 6848 NA. 70220117 2019-03-27 Update Report 70194014 to include minor firmware update for Model XW Pro 6848 NA. 70212688 2019-03-04 Update Report 70194014 to Include Volt-Watt and revised Freq-Watt grid tie requirements as per UL1741 Supplement SA for Model XW Pro 6848 NA (FGA 865-6848-21).</p>
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank" rel="noopener noreferrer">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" rel="noreferrer">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<p>On Tue, 18 May 2021 14:07:08 -0400, "Glenn Burt" <<a href="mailto:glenn.burt@glbcc.com" rel="noreferrer">glenn.burt@glbcc.com</a>> wrote:</p>
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<p class="v1MsoNormal">Hi Kirk,</p>
<p class="v1MsoNormal"> </p>
<p class="v1MsoNormal">Can you elaborate on which UL standards the older SB units don't comply with?</p>
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<p class="v1MsoNormal">-Glenn</p>
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<p class="v1MsoNormal"><strong>From:</strong> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" rel="noreferrer">re-wrenches-bounces@lists.re-wrenches.org</a>> <strong>On Behalf Of </strong>Kirk Herander, VSE<br /><strong>Sent:</strong> Tuesday, May 18, 2021 6:42 AM<br /><strong>To:</strong> <a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a><br /><strong>Subject:</strong> Re: [RE-wrenches] SMA SB 2500U</p>
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<p class="v1MsoNormal"> </p>
<p class="v1MsoNormal"><span style="font-size: 12.0pt;">These older Sunnyboys do not comply with latest UL standards regardless. If its a new installation, a savvy utility / AHJ will catch this.</span></p>
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<p class="v1MsoNormal"><span style="font-size: 12.0pt;"> </span></p>
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<p class="v1MsoNormal"><strong><span style="font-size: 10.0pt;">Kirk Herander / <a title="Send an email to kirkh@vermont.solar" href="mailto:kirkh@vermont.solar" rel="noreferrer">kirkh@vermont.solar</a></span></strong><span style="font-size: 12.0pt;"></span></p>
<p class="v1MsoNormal"><strong><span style="font-size: 10.0pt;">Owner|Principal, VT Solar, LLC</span></strong><span style="font-size: 12.0pt;"></span></p>
<p class="v1MsoNormal"><strong><em><span style="font-size: 10.0pt;">Celebrating our 30<sup>th</sup> Anniversary 1991-2021!!</span></em></strong><span style="font-size: 12.0pt;"></span></p>
<p class="v1MsoNormal"><span style="font-size: 10.0pt;"><a title="Click to open in a new window or tab
https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb..." href="https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842843233477645&sdata=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D&reserved=0" target="_blank" rel="noopener noreferrer"><strong>www.vermont.solar</strong></a></span><span style="font-size: 12.0pt;"></span></p>
<p class="v1MsoNormal"><span style="font-size: 10.0pt;">dba Vermont Solar Engineering</span><span style="font-size: 12.0pt;"></span></p>
<p class="v1MsoNormal"><span style="font-size: 10.0pt;">802.863.1202</span><span style="font-size: 12.0pt;"></span></p>
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<p style="margin-top: 7.5pt;"><span style="font-size: 12.0pt;">On 5/17/2021 3:53:26 PM, William Miller <<a href="mailto:william@millersolar.com" rel="noreferrer">william@millersolar.com</a>> wrote:</span></p>
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<p class="v1MsoNormal" style="margin-bottom: 12.0pt;"><span style="font-size: 12.0pt;">Jay: <br /><br />Some years ago I mis-ordered 5 SB2500s for 208 three phase and it turned <br />out the system was 240 VAC three phase (open delta). I had to return the <br />inverters to the factory to be converted and I had to rewire all of the <br />arrays. So no, I don't think this can be done in the field. <br /><br />William Miller <br /><br />Miller Solar <br />17395 Oak Road, Atascadero, CA 93422 <br />805-438-5600 <br /><a href="http://www.millersolar.com" target="_blank" rel="noopener noreferrer">www.millersolar.com</a> <br />CA Lic. 773985 <br /><br /><br />-----Original Message----- <br />From: RE-wrenches [<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" rel="noreferrer">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] On <br />Behalf Of Jay <br />Sent: Monday, May 17, 2021 11:44 AM <br />To: RE-wrenches <br />Subject: [RE-wrenches] SMA SB 2500U <br /><br />Does anyone know if you can convert a <br />SMA SB2500U ( old red inverter) from 208 to 240vac? <br /><br />Without using a boost transformer. <br /><br />Thx <br />Jay <br /><br />Peltz power. <br /><br /><br />_______________________________________________ <br />List sponsored by Redwood Alliance <br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a> <br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a> <br /><br />Change listserver email address & settings: <br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a> <br /><br />There are two list archives for searching. When one doesn't work, try the <br />other: <br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a> <br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a> <br /><br />List rules & etiquette: <br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a> <br /><br />Check out or update participant bios: <br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a> <br />_______________________________________________ <br />List sponsored by Redwood Alliance <br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a> <br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a> <br /><br />Change listserver email address & settings: <br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a> <br /><br />There are two list archives for searching. When one doesn't work, try the other: <br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a> <br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a> <br /><br />List rules & etiquette: <br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a> <br /><br />Check out or update participant bios: <br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a> </span></p>
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