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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="color:#44546a">I should have mentioned that our installation is not a metal roof either. Ours is a flat foam roof with large tilt racked arrays of SunPower modules.</span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">I’ve spoken with SMA tech support twice on this and got the idea that either I have a real ground fault or that there is some sort of inductance related problem that they don’t necessary have a fix for yet. </span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span></p><p class="MsoNormal"><span style="color:#44546a">Best, August</span></p><p class="MsoNormal"><span style="color:#44546a"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a> [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Jeff Irish<br>
<b>Sent:</b> Tuesday, March 25, 2014 6:34 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof</span></p></div></div><p class="MsoNormal"> </p><div><div><p class="MsoNormal">
<span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">August,</span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
</div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">We're seeing multiple inverters with the same error, and not getting the best of answers or support from SMA on fixing the problem so far. And this is not a metal roof; it's PanelClaw on EPDM. </span></p>
<div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Jeff Irish</span></p>
</div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Hudson Solar</span></p><div><div class="MsoNormal" align="center" style="text-align:center">
<span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><hr size="2" width="100%" align="center"></span></div><div id="divRpF295909"><p class="MsoNormal" style="margin-bottom:12.0pt">
<b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a> [<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] on behalf of August Goers [<a href="mailto:august@luminalt.com">august@luminalt.com</a>]<br>
<b>Sent:</b> Tuesday, March 25, 2014 8:41 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"></span></p>
</div><div><div><p class="MsoNormal"><span style="color:#44546a">Hi Marco,</span><span style="color:black"></span></p><p class="MsoNormal"><span style="color:#44546a"> </span><span style="color:black"></span></p><p class="MsoNormal">
<span style="color:#44546a">Did you ever make any progress on this issue? We’re having an interesting issue with one of the new Sunny Tri-Power inverters (a 24 kW unit in this case) where we get an error “residual current too high.” We’ve only done a little troubleshooting so far but I don’t think we have a ground fault. </span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span><span style="color:black"></span></p><p class="MsoNormal"><span style="color:#44546a">Best,</span><span style="color:black"></span></p><p class="MsoNormal"><span style="color:#44546a"> </span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="color:#44546a">August</span><span style="color:black"></span></p><p class="MsoNormal"><span style="color:#44546a"> </span><span style="color:black"></span></p><p class="MsoNormal"><span style="color:#44546a">Luminalt</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="color:#44546a"> </span><span style="color:black"></span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a> [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Marco Mangelsdorf<br>
<b>Sent:</b> Friday, March 14, 2014 9:56 AM<br><b>To:</b> 'RE-wrenches'<br><b>Subject:</b> Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof</span><span style="color:black"></span></p></div></div>
<p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="color:#1f497d">Probably not.</span><span style="color:black"></span></p><p class="MsoNormal"><span style="color:#1f497d"> </span><span style="color:black"></span></p>
<div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a> [<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>RE Ellison<br>
<b>Sent:</b> Friday, March 14, 2014 1:24 AM<br><b>To:</b> 'RE-wrenches'<br><b>Subject:</b> Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof</span><span style="color:black"></span></p></div></div>
<p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Arial Black","sans-serif";color:black">Is the metal roof grounded? Just a fast thought.</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Arial Black","sans-serif";color:black"> </span><span style="color:black"></span></p><p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Arial Black","sans-serif";color:black">bob</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Arial Black","sans-serif";color:black"> </span><span style="color:black"></span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> <a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a> [<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Marco Mangelsdorf<br>
<b>Sent:</b> Thursday, March 13, 2014 10:31 PM<br><b>To:</b> 'RE-wrenches'<br><b>Subject:</b> [RE-wrenches] Unusual problem with SMA TL inverter on metal roof</span><span style="color:black"></span></p></div></div>
<p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="color:black">Friends,</span></p><p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="color:black">We have run across an odd technical problem at our commercial install at a laundromat on our island. Attached is the description of the issue from SMA. We don’t know much except that we are switch out the TL inverters to the old style US inverters because SMA has no fix for the phantom ground tripping. The issue is beyond our feeble understanding. </span></p>
<p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="color:black">Any observations to share?</span></p><p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal">
<span style="color:black">Thanks,</span></p><p class="MsoNormal"><span style="color:black"> </span></p><p class="MsoNormal"><span style="color:black">marco</span></p><p class="MsoNormal"><span style="color:black"> </span></p>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><hr size="1" width="100%" noshade style="color:#aca899" align="center">
</span></div><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">No virus found in this message.<br>Checked by AVG - <a href="http://www.avg.com" target="_blank">www.avg.com</a><br>
Version: 2014.0.4336 / Virus Database: 3722/7186 - Release Date: 03/12/14</span><span style="color:black"></span></p><div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><hr size="1" width="100%" noshade style="color:#a7a6aa" align="center">
</span></div><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">No virus found in this message.<br>Checked by AVG - <a href="http://www.avg.com" target="_blank">www.avg.com</a><br>
Version: 2014.0.4336 / Virus Database: 3722/7186 - Release Date: 03/12/14</span><span style="color:black"></span></p></div></div></div></div></div></div></body></html>