Third installment of 2018 70E changes video series focuses on Table 130.5(C) - how to estimate the likelihood of an occurrence of an arc flash incident

Blog Post created by lisamariesinatra Employee on Jan 18, 2018
As an employer in the electrical field, NFPA appreciates your dedication to one of the most rewarding professions. Safety is a top priority for you and everyone on the job and NFPA 70E: Standard for Electrically Safety in the Workplace, can help you make good decisions when it comes to your team.   
As many of you know, the 2018 edition of 70E was recently released. To help you navigate through some of the top changes, we’ve developed a five-part video series hosted by NFPA’s technical experts. In our third video, Chris Coache, NFPA’s senior electrical engineer, reviews Table 130.5(C) – Estimate of the Likelihood of Occurrence of an Arc Flash Incident.  
Table 130.5(C), as Chris points out, is a helpful tool in estimating the probability of an arc flash incident occurring. Scenarios include:  
  • Installing and removing circuit breakers 
  • Taking voltage readings at panelboards and distribution equipment
  • Operation of circuit breakers and disconnecting means 
Chris adds that because of this revision to the table, it can now be used for both the PPE category method and for the incident energy evaluation analysis method when assessing an arc flash risk. Want to learn more? Get the full explanation from Chris below. (NOTE: This clip is part of a pre-recorded full webinar presented in July 2017).    
Let NFPA provide you with everything you need to take your electrical safety skills to the next level with knowledge gained right from the source. Find this information and additional resources related to 70E including articles, blog series, a fact sheet, trainings. products and more, at