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  • Mounting Structures 



    Mounting structures and components for roof top installations.


    Veteran solar pro David Katz, CEO of AEE Solar in one his interview has estimate the split between off grid and grid tie installations, respective between the residential and commercial type of installations: grid tie may be around 30% from the total amount rest being roof installed in case of residential installations; between the residential and commercial it is hard to call, it is slightly over 50% for commercial installations.

    Roof-mounted arrays take advantage of available space and the fact are easy accessible and becouse are elevated from the ground are considered more secure. In the same time they are less expensive to be installed, since no additional heavy machinery as excavators or concrete machines are required. Being elevated access to array wiring it is difficult. In considering the roof mounted solar plant there are other considerations as the rail and solar panels weight, snow deposits which can occur in that geographical area and the wind gusts. All roof penetrations must be flashed and sealed. Flush-mounted arrays must be installed with the recommended 4- to 6-inch spacing above the roof.  There are other restrictions to consider when it comes to roof installation: the distance from the upper line of the array to the ridge of the roof must be at least 3 foot. Same rule applies from the other margins of the roof to the contours of the array. Roof mounting space is usually limited, constraining the array’s size. The array design must accommodate obstructions, such as vents, chimneys, and skylights.

    When it comes to roof installations NEC 690.31 put in prospect that all the wiring must be secured with ties and clips and never make direct contact with the surface of the roof. In the same time the mesh used to deter the presence of animals must comply with the same NEC 690.31 considerations. Animal guards are to be taken in consideration for potential critters, such as squirrels that like to chew on wires.

    The information posted herein has been compiled by Clean Energy Brands from OEM product data and reputable publications. All rights reserved!


     


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