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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Mike,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks for posting the note, but I find the wording to be less than fully clear. According to this note, the “The transformer-less series of inverters named Sunny Boy TL-US-12, Sunny Boy TL-US-22 and Sunny Tripower 12/15/20/24000TL-US-10 have a neutral connection that is required at installation for instrumentation, voltage and phase detection only.”<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There is no mention of the -41 inverter also using the neutral for reference only, even though the note is “applicable to the following inverter types” and that shows the -41<br><br>Also, the table has these green x marks but no annotation of what the green x indicates.<br><br>Can you clarify, please?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><img width=294 height=116 style='width:3.0625in;height:1.2083in' id="_x0000_i1033" src="cid:image008.png@01D5A435.65EF6F30" alt="simple signature block"><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> RE-wrenches <re-wrenches-bounces@lists.re-wrenches.org> <b>On Behalf Of </b>Harry Mahon<br><b>Sent:</b> Thursday, November 14, 2019 11:02 AM<br><b>To:</b> RE-wrenches <re-wrenches@lists.re-wrenches.org>; Jeff Clearwater <jeffc@villagepowerdesign.com><br><b>Subject:</b> Re: [RE-wrenches] 705.95(B) and Sunny Boys - current on Neutral?<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Lloyd – great find!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am attaching a updated note that specifically calls out current products but has less code detail.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards – <o:p></o:p></p><p class=MsoNormal>Mike<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>SMA America<br>Michael Mahon</span><span style='font-size:9.0pt;font-family:"Arial",sans-serif'><br>Technical Trainer, Solar Academy<br>6020 West Oaks Boulevard, Suite 300<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial",sans-serif'>Rocklin, CA 95765<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial",sans-serif'>U.S.A.</span><span style='font-size:8.0pt;font-family:"Arial",sans-serif'><br></span><span style='font-size:9.0pt;font-family:"Arial",sans-serif'>Mobile: +1 916 918 9412<u><br><a href="http://www.sma-america.com/">www.SMA-America.com</a><o:p></o:p></u></span></p><p class=MsoNormal><u><span style='font-size:9.0pt;font-family:"Arial",sans-serif'><o:p><span style='text-decoration:none'> </span></o:p></span></u></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial",sans-serif'>Solar Academy: <a 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Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you.</span><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>> <b>On Behalf Of </b>Lloyd Hoffstatter<br><b>Sent:</b> Wednesday, November 13, 2019 10:38 AM<br><b>To:</b> Jeff Clearwater <<a href="mailto:jeffc@villagepowerdesign.com">jeffc@villagepowerdesign.com</a>>; RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br><b>Subject:</b> Re: [RE-wrenches] 705.95(B) and Sunny Boys - current on Neutral?<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Jeff,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>An oldie but attached tech note explains.<o:p></o:p></p><p class=MsoNormal>May Need to upsize G / N for voltage drop depending on run…<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Lloyd<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Lloyd Hoffstatter<o:p></o:p></p><p class=MsoNormal>Sunstruck Consulting<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgo.microsoft.com%2Ffwlink%2F%3FLinkId%3D550986&data=02%7C01%7Cmichael.mahon%40sma-america.com%7Ca57263d3340c445bd5ce08d76860354c%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C0%7C637092634734737930&sdata=ljnPZYRGhPwgRSsi3yM%2BI46x1iUvt52uQ8DtHvidzvw%3D&reserved=0">Mail</a> for Windows 10<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=1 width="98%" align=center></div><div id=divRplyFwdMsg><p class=MsoNormal><b><span style='color:black'>From:</span></b><span style='color:black'> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>> on behalf of Jeff Clearwater <<a href="mailto:jeffc@villagepowerdesign.com">jeffc@villagepowerdesign.com</a>><br><b>Sent:</b> Wednesday, November 13, 2019 12:00:37 PM<br><b>To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br><b>Subject:</b> [RE-wrenches] 705.95(B) and Sunny Boys - current on Neutral?</span> <o:p></o:p></p><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='color:black'>Hey Folks,<br><br>So does anyone have a reference I can show my AJH as to whether there is any current on the neutral of a single phase 240 VAC SB 7.7-40 inverter?<br><br>705.95(B) states:<br><br><b>Neutral Conductor for Instrumentation, Voltage<br>Detection or Phase Detection. </b>A conductor used solely for<br>instrumentation, voltage detection, or phase detection and<br>connected to a single-phase or 3-phase utility-interactive<br>inverter, shall be permitted to be sized at less than the<br>ampacity of the other current-carrying conductors and shall<br>be sized equal to or larger than the equipment grounding<br>conductor.<br><br>Be great not have to run 3/0 wire to my dedicated PV subpanel with 5 SB7.7s. At 200 Amps I could use 6 AWG according to 705.95. A huge savings in wire pull hassle not to mention copper.<br><br>Are there any other practical considerations for those SBs to operate well if I were to go that low with the neutral?<br><br>Anybody have any field experience with AJHs on this?<br><br>Thanks,<br><br>Jeff</span><o:p></o:p></p><div><p class=MsoNormal style='background:white'><span style='color:black'>~~~~~~~~~~~</span><o:p></o:p></p><div><p class=MsoNormal style='background:white'><span style='color:black'>Jeff Clearwater<br>Village Power Design<br><a href="https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.linkedin.com%2Fin%2Fjeff-clearwater-0622a312%2F&data=02%7C01%7Cmichael.mahon%40sma-america.com%7Ca57263d3340c445bd5ce08d76860354c%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C0%7C637092634734747920&sdata=p3O8JIapfJi4lWUaxtjir6oD0Nfss%2FvzCc%2BmO6DhkIc%3D&reserved=0">linkedin</a> <br><a href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.villagepowerdesign.com&data=02%7C01%7Cmichael.mahon%40sma-america.com%7Ca57263d3340c445bd5ce08d76860354c%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C0%7C637092634734747920&sdata=nAk%2FP4sQtocN2rmE64IfGo5BkOo1gemXIBVpP1nWXII%3D&reserved=0">www.villagepowerdesign.com</a><br>cell - </span><span class=xpostbox-detected-content><span style='color:#505050'>413-559-9763</span></span><span style='color:#505050'><br><span class=xpostbox-detected-content>~~~~~~~~~~~~~~~~~~~~~~~</span></span><o:p></o:p></p></div></div></div></div></body></html>