![]() ![]() NFPA 70E provides a simplified formula for calculating incident energy. ![]() AC systems are covered in Table 130.4(D)(a), and DC systems are covered in Table 130.4(D)(b).Ĭalculating the Arc Flash Boundary is more complex, partly because the phenomenon of arc flash is still being researched. The two shock protection boundaries are based exclusively on the voltage of the equipment and can be found in a set of tables in NFPA 70E.
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