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 [email protected] 817.917.0527
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