What must be worn inside the arc flash boundary according to NFPA 70E?

In environments where there is a potential for arc flash hazards, the National Fire Protection Association (NFPA) 70E standard specifies the importance of wearing protective clothing and personal protective equipment (PPE) inside the arc flash boundary. This requirement is crucial because the arc flash can produce intense heat and energy that can cause serious injuries or fatalities if proper precautions are not taken.

Protective clothing is designed to withstand high temperatures, limit thermal conductivity, and reduce the risk of burns. Items such as flame-resistant coveralls, non-conductive helmets, safety glasses, and appropriate gloves must be worn to safeguard against both thermal and electrical hazards present in such environments. By adhering to these guidelines, workers are better protected when performing tasks in areas where arc flash incidents may occur.

The requirement ensures that individuals are equipped not only to minimize the risk of injury but also to effectively respond to any incidents that might arise while working near electrical equipment.