Hi Jim,
We have installed a number of these racks both with and without micros. Its a good system that allows for a lot of flexibility in layout and design, and seems pretty durable once bolted together. Just make sure to request the integrated bonding clamps (they also have a leash, which adds considerable time to the job). The Enphase approved bracket works well, but wire management with micros can be difficult. I originally selected this rack because the top down clamps worked with the flangeless SolarWorld 2.0 frame, but you really need that flange to keep your wires up. If you do go Enphase I would recommend checking out the Heyco SunRunner 2 cable clip (MPN S6404). http://www.heyco.com/Alternative_Energy_Products/pdf/1-11.pdf Also, the ballast tray feet are a little sharp. They had an epdm cover, but Im told they are not going to include this in the future. I would recommend either a slip sheet under the trays or you use the AET ballast pad to protect the roof membrane. Good luck! Garrison Garrison Riegel Project Manager Solar Service Inc [p] 847-677-0950 [f] 847-647-9360 www.solarserviceinc.com <http://www.solarserviceinc.com/> NABCEP Certified Solar PV and Thermal Installer _____ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Solarguy Sent: Thursday, August 23, 2012 11:22 AM To: 'RE-wrenches' Subject: [RE-wrenches] AET Rayport array #1 Wrenches Were preparing a design for a 2nd 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. So having never installed this AET product Im looking for recommendations from Wrenches who have worked with this before. 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. 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. Advice please Thanks as always . Jim Duncan North Texas Renewable Energy Inc www.ntrei.com <http://www.ntrei.com/> NABCEP PV 031310-57 TECL-27398 nt...@1scom.net 817.917.0527
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