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In addition paragraph (a)(2)(ii) states that ... Methods for calculating the incident energy of an arc flash and for establishing the arc flash boundary in three-phase ac systems are addressed. It ...

It provides detailed boundary lines consistent with the state, tract, and county data sets and that are effective for cartographic display at regional and state levels." USA States : This is polygon data that "presents the 50 states, the District of Columbia, and Puerto Rico of the United States.