Jul 18, 2018 10:08:37 AM / by LSS

Arc Flash is an intense release of energy caused by an electrical arc fault between two conductors. Arc flash causes death and injury every year. It is a serious topic that should be understood by anyone working around electrical systems. This lists of 10 facts about arc flash will increase your awareness, and hopefully prompt an increase in safety when and where this hazard exists.

  • 5 to 10 arc flash accidents occur every day in the U.S.
  • More than 2,000 people are treated annually in burn centers with arc flash injuries
  • 1-2 deaths occur per day from an arc flash incident
  • $1.5M average cost of medical treatment
  • 8-12 months away from work and possibility of permanent disability
  • $10-15M average litigation cost for general industry incident
  • Two-thirds of all electrical injuries result from inappropriate action of a worker
  • Arc Flash can reach temperatures upwards of 10,000ºF (hotter than the surface of the Sun)
  • Arc Blasts can produce a pressure wave greater than 2,000 lbs./sqft
  • 480 volts often times has a greater Arc Flash potential than medium voltage gear (4,160V and above)


An Arc Flash Assessment will determine the energy levels and boundary distances, as well as assist in complying with the NFPA guidelines that are being enforced by OSHA inspectors. So how can an Arc Flash Assessment help keep your building in compliance and your workers safe?


Arc Flash Assessment – Step by Step to Compliance:

Collection of Data (One line Drawings)

  • Save time and money with improved response time through updated drawings and inventory.

Calculations of Incident Energy

  • Identifying hazards, such as incident energy will tell you the level of risk in your electrical panels.

Coordination Study & Mitigation

  • Reduce the risk by lowering the incident energy and hazard risk category. This will help lower your personal protection equipment (PPE) requirements.

Arc Flash Labels

  • Ensure compliance with OSHA and NFPA 70E. Arc Flash Risk Assessments that include incident energy calculations and arc flash labels are required for compliance.

Arc Flash Training

  • Learn to work safely within your electrical environment, by gaining awareness and saving lives.

Tags: Arc Flash


Written by LSS

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