In the 2018 edition of NFPA 70E, a new tool to assist with arc flash hazard assessment

摘要

With the publication of the 2018 edition of NFPA 70E, Electrical Safety in the Workplace?,in October, it is important to understand a significant change related to performing arc flash risk assessments. This concept has undergone a significant transformation over the last few revision cycles, and for the 2018 edition the major change is a new feature, Table 130.5(C), which estimates whether an arc flash event is likely to occur while performing a variety of electrical tasks.