NFPA 70E-2021, Table 130.5(G), entitled “Selection of Arc-Rated Clothing and Other PPE When the Incident Energy Analysis Method is Used” was used to determine the clothing required, depending on the amount of incident energy (calories/Cm^ 2 ). This table is used as a reference when deciding what PPE gear needs to be worn in each risk category situation.
Table 130.5(G) Personal Protective Equipment (PPE)
Incident Energy
PPE
Incident energy exposures equal to 1.2 cal/cm² up to 12 cal/cm²
Arc-rated clothing with an arc rating equal to or greater than the estimated incident energy (See note 1) Long-sleeve shirt and pants or coverall or arc flash suit. (SR) Arc-rated face shield and arc-rated balaclava or arc flash suit hood (SR) (See note 2) Arc-rated outerwear (e.g., jacket, parka, rainwear, hard hat liner) (AN) (See note 5) Heavy-duty leather gloves, arc-rated gloves, or rubber insulating gloves with leather protectors (SR) (See note 3) Hard hat Safety glasses or safety goggles (SR) Hearing protection Leather footwear (See note 4) Arc-rated clothing with an arc rating equal to or greater than the estimated incident energy (See note 1) Long sleeve shirt and pants or coverall or arc flash suit. (SR) Arc-rated arc flash suit hood Arc-rated outerwear (e.g., jacket, parka, rainwear, hard hat liner) (AN) (See note 5) Arc-rated gloves or rubber insulating gloves with leather protectors (SR) (See note 3) Hard hat Safety glasses or safety goggles (SR) Hearing protection Leather footwear (See note 4)
Incident energy exposures greater than 12 cal/cm²
Legend: AN = As needed (optional) SR = Selection required Notes: 1. Arc ratings can be for a single layer, such as an arc rated shirt and pants or a coverall, or for an arc flash suit or a multi-layer system if tested as a combination consisting of an arc-rated shirt and pants, coverall, and arc flash suit 2. Face shields with a wrap-around guarding to protect the face, chin, forehead, ears and neck area are required by 130.7(C)(10)(c). Where the back of the head is inside the arc flash boundary, a balaclava or an arc flash hood shall be required for full head and neck protection. 3. Rubber insulating gloves with leather protectors provide arc flash protection in addition to shock protection. Higher class rubber insulating gloves with leather protectors, due to their increased material thickness, provide increased arc flash protection. 4. Footwear other than leather or dielectric shall be permitted to be used provided it has been tested to demonstrate no ignition, melting, or dripping ta the estimated incident energy exposure. 5. The arc rating of outer layers worn over arc-rated clothing as protection from the elements or for other safety purposes, and that are not used as part of a layered system, shall not be required to be equal to or greater than the estimated incident energy exposure.
SITE NAME ARC FLASH STUDY
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