Estimate incident energy in cal/cm² and determine the required PPE category per IEEE 1584 and NFPA 70E. Essential for electrical safety compliance and hazard analysis.
Based on NFPA 70E, IEEE 1584
Arc flash hazard analysis per IEEE 1584 estimates the incident energy (cal/cm²) a worker could be exposed to during an arc flash event. This determines the PPE category required per NFPA 70E Table 130.7(C)(15)(c), ranging from Category 1 (up to 4 cal/cm²) through Category 4 (up to 40 cal/cm²).
This calculator provides estimates for reference purposes only. Results must be verified by a licensed electrician or electrical engineer before any installation.
NEC Reference: NFPA 70E, IEEE 1584-2018
Enter 0.208, 0.48, 4.16, 12.47, etc.
5 cycles = 0.083s | 30 cycles = 0.5s
⚠️ IMPORTANT LEGAL DISCLAIMER
For Reference Only: This calculator is provided for educational and informational purposes only. It is not intended to be a substitute for professional engineering design, advice, or certification.
Code Compliance: Calculations are based on the 2023 National Electrical Code (NEC®). However, local codes, amendments, and Authority Having Jurisdiction (AHJ) requirements vary by location and may supersede standard NEC requirements.
No Liability: SparkShift and its affiliates assume no liability for errors, omissions, or the use/misuse of this tool. Users are solely responsible for verifying all results against applicable codes and standards before installation. Always consult a licensed electrician or engineer.
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