Knowledge How to choose your arc flash protective clothing

How to choose your arc flash protective clothing

Choose Your Arc Flash Clothing In Three Easy Steps

C&G Protective Clothing Showroom

The intense energy and very short duration of an electrical arc flash represents a very unique exposure. Complying with NFPA 70E and following these three steps will greatly reduce your chances of injury due to electrical arc flash.

1.Conduct Both a Shock and Flash Hazard Analysis

  • A hazard analysis is required to determine the flash protection boundary
  • Inside the flash protective boundary,exposure to an electrical arc is predicted to cause a second degree burn injury and PPE is required
  • Required FR clothing is based on the specific hazard present
  • The severity of the arc hazard is defined as incident energy in calories per centimeters squared (cal/cm2),which may be determined by three methods:
  • Method A – Estimates the incident energy based on knowledge of the electrical systems and work practices
  • Method B – Estimates the incident energy by determining hazard risk category classifications from tables of common work tasks
  • Method C – Lays out a simplified two-category FR clothing system that provides two PPE clothing categories: everyday work clothing and electrical switching clothing. This concept helps assure adequate PPE in facilities with large or diverse electrical systems.

2.Determine PPE Clothing Needs Based on the Degree of Hazard

Minimum Arc
Rating of PPE
0 Non-melting, flammable materials (untreated cotton, wool, rayon, silk
or blends) with a fabric weight of at least 4.5 ounces/yard2
1 FR shirt and FR pants, or FR coveralls 6-8 cal/cm2
2 Cotton underwear, conventional short sleeve shirt and briefs/shorts,
plus FR shirt and FR pants, or FR coveralls
8-25 cal/cm2
3 Cotton underwear, plus FR shirt and FR pants, plus FR coveralls 25-40 cal/cm2
4 Cotton underwear, plus FR shirt and FR pants, plus multi-layered
flash suit
40+ cal/cm2

3.Select Protective Arc flash and Flame Resistant Clothing and Coveralls

  • Garments are rated based on their ability to protect against electrical arcs
  • This arc rating is expressed in cal/cm
  • The standard requires that garments have a minimum arc rating listed on the garment label
  • The protective clothing worn by employees must be based upon the incident energy associated with the task being performed
  • Be aware that other PPE may be required for specific tasks including: double-layer FR flash hoods, hard hats, FR hard hat liners, safety eyewear, hearing protection, leather gloves, voltage rated gloves and voltage-rated tools

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 Shanghai C&G Safety Co., Ltd.

A premier provider of safety solutions for both the public and private sectors, C&G is committed to protecting human life and ensuring that every worker goes home safely every day. Beyond our world-class customer service, C&G delivers comprehensive protective clothing, safety workwear and PPE products, services and solutions that help reduce injuries and minimize the true cost of safety for businesses across the World.

40cal/cm2 arc flash protective suit