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Using values that were previously calculated for IDC arc and Rarc, calculate the incident energy based on the arc flash occurring in a box/enclosure. Assume the enclosure to be a panelboard and use the same working distance and arc duration from the earlier example.

This method can be used in any software that performs arc flash calculations to determine the incident energy, arc flash boundaries, and other related parameters for arc flash risk assessment purposes. The method provides a more sophisticated and precise way of calculating short circuit contributions to the fault location.