Arc Flash Study Pre-Work Checklist

An arc flash study is only as good as the input data. This A4 single-page pre-work checklist ensures you collect everything before the study begins. Covers 20 numbered items: single-line diagram as-built verification, transformer nameplate data and impedance confirmation, utility fault level (MVA or kA) from the network operator, protection relay settings collection (every device in the study scope), cable lengths and sizes, motor contribution data, working distance documentation for each equipment location, electrode configuration assessment, existing PPE category assignments, and label preparation list. Following this checklist prevents the most common arc flash study errors — missing data and incorrect assumptions.