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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Looks like they use 24VDC for contactor activation, not 120VAC.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></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:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> RE-wrenches [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Mark Frye<br><b>Sent:</b> Monday, February 02, 2015 1:29 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Rapid Shut Down and the 10 Second Rule Questions<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>OK. So did you run a line 120V up to the box on the roof to energize the coil of the relay up there?<br><br>Mark Frye<o:p></o:p></p><div><p class=MsoNormal>On 2/2/2015 9:13 AM, Jerry Shafer wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p class=MsoNormal>The units we have used have a large contactor inside the combiner box made by AMtec Solar. this was required to control the shut down includes a fire button done on the ground floor<o:p></o:p></p></div><p class=MsoNormal>Jerry<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Feb 2, 2015 at 5:49 AM, Mark Frye <<a href="mailto:markf@berkeleysolar.com" target="_blank">markf@berkeleysolar.com</a>> wrote:<o:p></o:p></p><div><p class=MsoNormal>Jerry,<br><br>What unit did you use?<span style='color:#888888'><br><br><span class=hoenzb>Mark Frye</span></span> <o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On 2/2/2015 7:43 AM, Jerry Shafer wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p>Wrenches<br>We have installed some of these rapid shut down units and they are always located close to the array and ours kill the DC instantly as long as the inverter was running when this accures did not test it with inverters already off.<br>Jerry<o:p></o:p></p><div><p class=MsoNormal>On Feb 2, 2015 5:34 AM, "Christopher Warfel" <<a href="mailto:cwarfel@entech-engineering.com" target="_blank">cwarfel@entech-engineering.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>We have a interpretation problem among some people I work with with, and 690.12 Rapid Shut Down and the the 10 second time for reducing ac and dc conductors to 240ma, and 30V. The word "initiation" seems to indicate that all affected conductors need to be at these levels within 10 seconds of de-energizing either the ac or dc conductors. If so, then the disconnects need to be co-located to meet this requirement if this interpretation is correct.<br><br>I have read Mr. Brook's article in Solar Pro, but AHJs may feel differently.<br><br>Would anyone care to weigh in on their interpretation?<br><br>Thank you, Chris<br><br><br><br><br><br>-- <br>Christopher Warfel, President<br>ENTECH Engineering, Inc.<br>PO Box 871, Block Island, RI 02807<br><a href="tel:401-466-8978" target="_blank">401-466-8978</a><br><br><br>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">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">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive: <a 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