NFPA 70E
NFPA 70E – STANDARD FOR ELECTRICAL SAFETY IN THE WORKPLACE (USA) This standard defines five classes of HRC (Hazard Risk Category), which goes from HRC 0 to HRC 4. HRC 4 or HRC Level 4 is the highest risk category with ATPV value more than 40cal/cm2. Consequently, protective clothing that withstands HRC 4 should provide…