ARC-Flash Calculations: DGUV-I 203-077 vs. IEEE 1584

It is globally recognized that IEEE 1584 is used to calculate the prospective incident energy for selecting arc rated clothing and personal protective equipment. The information brochure DGUV-I 203-077 describes an alternative calculation method to IEEE 1584. The DGUV-I 203077 Guide has been developed and used in Germany for the selection of Arc Rated PPE. DGUV is the German Social Accident Insurance Institution which is the national, compulsory program that insures workers for injuries or illness incurred through their employment. Used by several countries, this document continues to be promoted globally as a preferred alternative to IEEE 1584. This paper explores the history of DGUV-I 203-077, why there are two incompatible arc flash calculation methods and a detailed comparison of DGUV-I 203-077 and IEEE 1584.