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Arc Flash

Arc flash is described by the National Fire Protection Association as “a dangerous condition associated with the release of energy caused by an electric arc.” Arc flash is an accidental electrical explosion usually caused by a short circuit. It happens at higher-voltages (around 300 volts and above). It causes electrical conductors to melt creating an explosion of molten or even vaporized metal. Temperatures can be as high as 20,000 degrees Celsius.