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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Wrenches<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>We’re preparing a design for a 2<sup>nd</sup> story flat commercial office building roof using AET 15° stainless frames with ballast. The 1920s vintage building is on the National Register of Historical Places so fortunately the array will be hidden behind a 3 ft parapet. No real problem there but a large amount of hvac equipment is squeezed into the center of the roof to keep it invisible from the street per those same historical mandates. This allows us a pretty large area on 3 sides of the perimeter for the array. The array is about 25 kW but it is confined to a large “C” shaped area just inside the parapet. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>So having never installed this AET product I’m looking for recommendations from Wrenches who have worked with this before.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>AETs design, made from my scale dimensioned drawing tries to fill every open space but I plan to delete a few modules and have basically one continuous array around 3 sides. There will be a couple of access routes to the roofs edge to keep city safety officials happy. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Also the limited space in the electrical room will almost for sure require us to use either micro inverters or several 5-7 kW string inverters on the roof, not my favorite strategy. Some potential shading by the south wall parapet may incline me to use both micros and string inverters. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Advice please<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thanks as always….<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif";color:#1F497D'>Jim Duncan<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif";color:#1F497D'>North Texas Renewable Energy Inc<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif";color:#1F497D'><a href="http://www.ntrei.com/">www.ntrei.com</a> <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif";color:#1F497D'>NABCEP PV 031310-57<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif";color:#1F497D'>TECL-27398<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif";color:#1F497D'><a href="mailto:ntrei@1scom.net">ntrei@1scom.net</a> <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif";color:#1F497D'>817.917.0527<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:26.0pt;color:#1F497D'><o:p> </o:p></span></p></div></body></html>