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    Face Shield Requirements NFPA 70E vs NESC

    I work for an electric utility that has open air substations with voltages of 12kV to 345kV. We are currently re-evaluating our PPE requirements for arc flash hazards. The NFPA 70E requires a face shield at 1.2 cal/cm2 but the NESC does not require a face shield until 9 cal/cm2. What incident...