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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>No – I have not.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My strongest suspect in all of this is AC / DC conflict and insulation issues.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>For those familiar, the DC and AC conductors run in the same space. Not too different than other inverters, I’d say. Fronius provides a conductor insulator sleeve for the AC conductors when the wires cannot be physically separated t othe left and right side (perhaps because of location of the array and where conductors enter the wire space.) WE have decided to now install those no matter what – can’t hurt.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Back to the megger testing…All of these are 600V applications and the conductor is rated for that. But the problems mostly (but not exclusively) occur at peak irradiance / middle of the day which leads me to believe the combo of high DC and high AC finally conflicts.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Perhaps time to invest in a megger tester. Next step for a professional installer I’d say. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thank you.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Howard “Scot” Arey<o:p></o:p></b></p><p class=MsoNormal>254-300-1228<o:p></o:p></p><p class=MsoNormal><a href="mailto:scot.arey@solarcentex.com"><span style='color:#0563C1'>scot.arey@solarcentex.com</span></a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><img border=0 width=167 height=167 style='width:1.7343in;height:1.7343in' id="Picture_x0020_2" src="cid:image002.png@01D2C7DB.82A9D860" alt="Solar Centex Logo - No Back.png 10 percent resize"><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><a name="_MailEndCompose"><o:p> </o:p></a></p><span style='mso-bookmark:_MailEndCompose'></span><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 [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Glenn Burt<br><b>Sent:</b> Monday, May 8, 2017 3:45 AM<br><b>To:</b> RE-wrenches <re-wrenches@lists.re-wrenches.org><br><b>Subject:</b> Re: [RE-wrenches] Anybody else getting 240 arc fault codes on Fronius installs as frequently as me???<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>Have you performed insulation resistance testing on all of your wiring?<o:p></o:p></p></div></div><div><div class=MsoNormal align=center style='text-align:center'><hr size=4 width="100%" align=center></div><p class=MsoNormal style='margin-bottom:12.0pt'><b>From: </b><a href="mailto:scot.arey@solarcentex.com">Howard Arey</a><br><b>Sent: </b>5/5/2017 14:17<br><b>To: </b><a href="mailto:re-wrenches@lists.re-wrenches.org">'RE-wrenches'</a><br><b>Subject: </b>[RE-wrenches] Anybody else getting 240 arc fault codes on Fronius installs as frequently as me???<o:p></o:p></p></div><p class=MsoNormal>I can’t imagine I’m the only one having this problem. Starting to suspect from Fronius that the problem is deeper than they let on.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>240 faults are arc-fault detection for Fronius. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We have checked every variable on our end – connectors, firmware, clean wire pulls. My teams are not perfect but I l know they are very good and know how important the clean installs are for us.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Most but not all of my issues are with bifacial modules. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Anybody else have this issue?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Howard “Scot” Arey<o:p></o:p></b></p><p class=MsoNormal>Owner, Solar CenTex<o:p></o:p></p><p class=MsoNormal>254-300-1228<o:p></o:p></p><p class=MsoNormal><a href="mailto:scot.arey@solarcentex.com">scot.arey@solarcentex.com</a><o:p></o:p></p><p class=MsoNormal><img border=0 width=167 height=167 style='width:1.7395in;height:1.7395in' id="Picture_x0020_1" src="cid:image001.png@01D2C5A1.EC41FDC0" alt="Solar Centex Logo - No Back"><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>