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.

1. CATEGORY 0 CATEGORY 1 CATEGORY 2 CATEGORY 3 CATEGORY 4
Protective Protective Protective Protective Protective
Clothing: Clothing: Clothing: Clothing: Clothing:
Non-melting or Arc-rated Clothing: Arc-rated Clothing: Arc-rated Clothing: Arc-rated Clothing:
untreated natural fiber.
Minimum arc rating of Minimum arc rating of Minimum arc rating Minimum arc rating
With a fabric weight of at least 4 cal/cm2 at least 8 cal/cm2 of at least 25 cal/cm2 of at least 40 cal/cm2
at least 4.5 oz/yard2
Arc-rated clothing Arc-rated clothing Arc-rated clothing Arc-rated clothing
Protective clothing must be labeled. must be labeled. must be labeled. must be labeled.
must be labeled
Arc-rated shirt (long Arc-rated shirt (long Arc-rated arc flash Arc-rated arc flash
Shirt (long sleeve) sleeve) and pants sleeve) and pants suit jacket and arc- suit jacket and arc-
or arc-rated coverall or arc-rated coverall rated arc flash suit rated arc flash suit
Pants (long) pants or arc-rated pants or arc-rated
Arc-rated face shield Arc-rated face shield coverall coverall
and balaclava or arc-
rated flash suit hood Arc-rated arc flash Arc-rated arc flash
suit hood suit hood
Protective Protective Protective Protective Protective
Equipment Equipment Equipment Equipment Equipment
Safety glasses Hard hat Hard hat Hard hat Hard hat
Hearing protection Safety glasses Safety glasses Safety glasses Safety glasses
(ear canal inserts)
Hearing protection Hearing protection Hearing protection Hearing protection
Heavy duty leather (ear canal inserts) (ear canal inserts) (ear canal inserts) (ear canal inserts)
gloves (See Note 1)
Heavy duty leather Heavy duty leather Arc-rated gloves Arc-rated gloves
gloves (See Note 1) gloves (See Note 1) (See Note 1) (See Note 1)
Leather work shoes Leather work shoes Leather work shoes Leather work shoes
Note 1: If rubber insulating gloves with leather protectors are used, additional leather or arc-rated gloves are not required. The combination of rubber insulating
gloves with leather protectors satisfies the arc flash protection requirement.
OK-12-1293