These Solar American Board for Codes and Standards (Solar ABCs) reports address an important safety issue in the design of many U.S. photovoltaic (PV) systems. This safety issue—undetected faults in grounded PV array conductors—came to light during investigations into two well-publicized PV system fires. The first occurred on April 5, 2008, in Bakersfield, California, and the second occurred on April 16, 2011, in Mount Holly, North Carolina. - See more at: http://www.solarabcs.org/about/publications/reports/blindspot/#sthash.xzzekbyZ.dpuf