NFPA 70E
The National Fire Protection Association (NFPA) 70E is a comprehensive standard that establishes best electrical safety practices standards on how to protect workers from electric arc flash and arc blast exposure and resulting potential injury and death.
There are 4 Arc Hazard Risk Categories under NFPA 70E defined by the ATPV ratings:
Most people working with electricity only require clothing that meets category 1 (ATPV 4 cal/cm²) or 2 (ATPV 8 cal/cm²) protection characteristics.
NFPA 70E electrical safety standards are aimed more towards those workers who work in category 3 (ATPV 25 cal/cm²) or 4 (ATPV 40 cal/cm²) hazard situations. Their clothing must meet ATPV rating minimums throughout the life of the garment.
| Hazard Risk categories |
ATPV (cal/cm²) |
| HRC 1 |
≥4 |
| HRC 2 |
≥8 |
| HRC 3 |
≥25 |
| HRC 4 |
≥40 |
We offer a range of fabric and garment design options that are tested to meet the NFPA 70E requirements for protection against Electric Arc Flash:
