This document outlines protective clothing and equipment requirements across 5 categories. Category 0 requires non-melting natural fiber clothing and safety glasses. Category 1 requires arc-rated clothing with a minimum rating of 4 cal/cm2, hard hat, safety glasses, and hearing and leather gloves. Category 2 requires arc-rated clothing rated at least 8 cal/cm2 and adds a face shield or flash suit hood. Category 3 increases the clothing rating to 25 cal/cm2 and requires an arc flash suit jacket and pants. Category 4 has the highest rating of 40 cal/cm2 and includes an arc flash suit hood.