By Rosalie Wills, James A. Milke, Sara Royle, Kristin Steranka

This SpringerBrief provides details on a wide selection of dangers and the wear power because of deploy of a photovoltaic (PV) procedure. the present set up practices for PV platforms on roofs create electric, fireplace, structural, and weather-related risks that don't comply to present codes, criteria and information records. power hazards contain structural loading, wind so much, hail, snow, particles accumulation, seismic dangers, firefighting risks, and electric risks. regardless of the elevated acclaim for PV platforms after the environmental stream, examine indicates that the prices of putting in PV platforms outweigh the advantages. dangers of PV platforms on roofs have brought on a number of incidents within the usa; the main striking in Bakersfield, California, and Mount Holly, North Carolina. Designed for fireplace engineers and execs, most sensible Practices for advertisement Roof-Mounted Photovoltaic approach set up deals strategies to establish PV platforms adequately and sustainably.

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Best Practices for Commercial Roof-Mounted Photovoltaic System Installation

This SpringerBrief provides info on a large choice of dangers and the wear capability brought on by set up of a photovoltaic (PV) approach. the present install practices for PV platforms on roofs create electric, fireplace, structural, and weather-related risks that don't comply to present codes, criteria and tips files.

Additional info for Best Practices for Commercial Roof-Mounted Photovoltaic System Installation

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Sherwood (2013) describes the experiments that were conducted: The new fire classification procedure requires the following tests be performed in order to derive a fire classification rating for the PV/roof system: • spread of flame test on the top surface of module or panel, • spread of flame test at roof and module or panel interface over representative steep or low sloped roof, • burning brand test on module surface over representative steep sloped roof, and • burning brand test between the module or panel and representative steep sloped roof.

In that paper, the theoretical detection limits of traditional ground fault protection systems were discussed but not explored in depth. The specific wiring failure that occurred in both the Bakersfield and Mount Holly fires was that one of the conductors faulted but did not blow the protective ground-fault fuse. As a result, this established a new “normal condition” to be measured. Then when a second ground fault current occurred, the ground-fault protection device was unable to interrupt the current, allowing arc faults to be formed, spreading sparks to surrounding materials, causing ignition (Brooks 2012).

That is, in both fires there was significant damage in a seemingly unrelated portion of the array away from the initial sources of ignition. Jackson connects the coincidence of these faults in his report, but he questions the likelihood of a repeat event. The SolarPro article showed that the problem was ultimately in the blind spot of ground-fault protection equipment and therefore an apparent general concern to the PV industry in the United States. As in the Bakersfield Fire, the Mount Holly fire caused significant damage in two different locations at the same time.

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