Arc Flash Concerns

Should I Be Concerned

Why Should Have Arc Flash Concerns?

As stated in the answers for Questions #1 & #2, a tremendous amount of heat is generated when these arcing faults occur. This can be extremely hazardous to personnel working on or near the location where the fault occurs. The number one reason to have Arc Flash concerns is for the safety of these personnel. Arc Flash Hazard Studies are performed to determine the risk to personnel, warn them of the hazards, and to instruct them as to what kind of personal protective equipment that they must wear.

Another reason to be concerned about Arc Flash Hazards is liability and government regulations. OSHA regulations apply to every worker that may approach or be exposed to energized electrical equipment. Failure for an employer to conform and follow OSHA and NEC requirements can lead to employee injuries, fines, penalties, and expensive law suits.

There are several regulations that address arc flash hazards. They are:

  • National Fire Protection Association (NFPA) Standard 70 or better known as The
    National Electric Code. The NEC® 2002 addresses the arc flash hazard in Article
    110.16.
  • NFPA 70B 2002 Recommended Practice for Electrical Equipment Maintenance.
  • NFPA 70E 2000 Standard for Electrical Safety Requirements for Employee
    Workplaces.
  • OSHA Standards 29-CFR, Part 1910 Sub part S (electrical) Standard number
    1910.333.