What does PPE Category 1 require in terms of arc-rated clothing?

PPE Category 1 is designed for tasks where there is a low level of incident energy associated with electrical work. It specifically requires long sleeve shirts and pants or an arc-rated coverall with a minimum arc rating of 4 cal/cm². This level of protection is necessary to prevent injuries from electric arc flashes, which can result in severe burns or other injuries.

The inclusion of long sleeves and full-length pants is crucial because it provides coverage for the arms and legs, reducing the risk of skin exposure to arc flash hazards. The minimum arc rating of 4 cal/cm² signifies that the material used is tested and proven to withstand a certain amount of thermal exposure from an arc flash, thereby protecting the wearer effectively. Thus, this apparel is fundamental in ensuring safety without the need for heavier and more cumbersome protective gear, which would be required in higher categories.