<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>Yes, these should only be used to get a grandfathered system back up and running(no ARC fault just GFDI) or a off-gridder that is not going to have any concerns...</div><div><br></div><div>Oh, and back when we were doing these at SMA in the test area we had a "special" rom set that made this conversion from 240 to 208v easy.</div><div><br></div><div>If one wants to go back to 240vac from a 208vac unit I use sunny data and re-program the AC window using Sunny Data and PC.</div><div><br></div><div>Note; the data label should/needs to be be marked up to reflect what the Inverter actually is!</div><div><br></div><div>I would not use a XFMR.</div><div><br></div><div>Louis, RE Repair/Solar Cowboyz</div><div><br></div>
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-------- Original Message --------<br>
Subject: Re: [RE-wrenches] SMA SB 2500U<br>
From: "Kirk Herander, VSE" <kirkh@vermont.solar><br>
Date: Tue, May 18, 2021 3:42 am<br>
To: "" <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
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<div id="__MailbirdStyleContent" style="font-size: 12pt;font-family: Arial;color: #000000;text-align: left" dir="ltr"> These older Sunnyboys do not comply with latest UL standards regardless. If its a new installation, a savvy utility / AHJ will catch this.<br><div><br></div><div class="mb_sig"><div class="MsoNormal" style="font-family: Arial;font-size:12pt;;margin: 0in 0in 0.0001pt"><span style="font-size: 10pt"><a target="_blank" name="_MailAutoSig"><b>Kirk Herander / </b></a><b><a target="_blank" href="mailto:kirkh@vermont.solar" title="Send an email to kirkh@vermont.solar" style="cursor: pointer; color: blue;">kirkh@vermont.solar</a></b><o:p></o:p></span></div><div class="MsoNormal" style="font-family: Arial;font-size:12pt;;margin: 0in 0in 0.0001pt"><span style="font-size: 10pt"><b>Owner|Principal, VT Solar, LLC</b><o:p></o:p></span></div><div class="MsoNormal" style="font-family: Arial;font-size:12pt;;margin: 0in 0in 0.0001pt"><span style="font-size: 10pt"><b><i>Celebrating our 30<sup>th</sup> Anniversary 1991-2021!!</i></b><o:p></o:p></span></div><div class="MsoNormal" style="font-family: Arial;font-size:12pt;;margin: 0in 0in 0.0001pt"><span style="font-size: 10pt"><a target="_blank" 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" 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..."><b><span style="color: blue;">www.vermont.solar</span></b></a><b><o:p></o:p></b></span></div><div class="MsoNormal" style="font-family: Arial;font-size:12pt;;margin: 0in 0in 0.0001pt"><span style="font-size: 10pt">dba Vermont Solar Engineering<o:p></o:p></span></div><div class="MsoNormal" style="font-family: Arial;font-size:12pt;;margin: 0in 0in 0.0001pt"><span style="font-size: 10pt">802.863.1202</span><br></div></div><blockquote class="history_container" type="cite" style="border-left-style:solid;border-width:1px; margin-top:20px; margin-left:0px;padding-left:10px;"> <div style="color: #AAAAAA; margin-top: 10px;">On 5/17/2021 3:53:26 PM, William Miller <<a href="mailto:william@millersolar.com">william@millersolar.com</a>> wrote:</div><div style="font-family:Arial,Helvetica,sans-serif">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">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">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">http://re-wrenches.org</a> <br> <br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">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">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a> <br> <br>There are two list archives for searching. 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