Arc Flash Calculator

Use this convenient tool to view a sampling of arc flash hazard calculations and the impact of various system changes on arc flash energy levels and personal protective equipment (PPE) requirements.


  • Select the Equipment Type from the Drop Down Box.
  • Drag slider bars to change values.
  • Press the "Calculate Arc Flash" button. Results are displayed below.
10 kA
1.0 sec [60 cycles]
18 inches
0.48 kV

* NOTE: This is a demonstration tool only and is not meant to be used to calculate arc flash values for personnel protection.


Arc Boundary
119.8 inches

Incident Energy
19.6 cal/cm2

Stay Up-to-Date

Get the latest arc flash hazard resources from NFPA, IEEE, and EasyPower: