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FR Frequently Asked Questions; Flame Resistant Ratings and Category Levels. ... Hazard Risk Category is the level of arc flash protection clothing you must wear to protect against a minimum level of incident energy measured in calories per centimeter sqared. ... is rated at a certain amount of flame resistance, again measured in cal/cm2. Each ...

Arc Rated Face Shield Breaker Cubical PPE Used and Identified on the panel label •Class 00 gloves with outer leather protectors •Cotton undershirt •Cotton long sleeve shirt •FR HRC rated outer clothing •Cotton pants •Ear plugs •Hard hat with arc flash shield. Arc Flash Event 10-15-2012 Circumstance: