Two simple words, a total of six letters, help define which electrical equipment is required to have an arc flash label. Although these two words are used with good intentions, they can often leave a person second-guessing themselves.
Mistakes happen, and there are plenty of opportunities to make them when performing an arc flash calculation study. The good news is commercially available arc flash software can help simplify the study process and perhaps even reduce errors.
The first step in conducting an arc flash study is to obtain the data necessary to accurately represent the electrical system. Equations defined by IEEE 1584–IEEE Guide for Performing Arc Flash Hazard Calculations are at the heart of most studies and require a lot of data.