For protection from low-level arc flash hazards, these kits include several of the necessary safety items in a storage bag. All contents meet NFPA 70E standards for protection against electrical arc flashes for personal protection equipment (PPE) category 2. Check the PPE category and minimum arc rating provided for your workplace, and then select all required clothing and personal protective equipment to meet the minimum arc rating. Arc rating measures a garment’s ability to insulate the wearer from burns; the higher the arc rating, the greater the flame resistance. All hard hats have a ratchet adjustment with an easy-turn knob.