Which protective measure is critical according to NFPA 70E when conducting a shock risk assessment?

The critical protective measure according to NFPA 70E when conducting a shock risk assessment is personal protective equipment (PPE). PPE serves as a vital layer of safety that protects workers from electric shock during activities involving exposed live parts. This equipment includes items such as insulated gloves, face shields, and arc-rated clothing designed to withstand specific electrical hazards.

When assessing shock risks, it is essential to ensure that workers are adequately protected with the right level of PPE corresponding to the potential exposure. This aligns with NFPA 70E’s emphasis on safety protocols to mitigate electrical hazards. Proper PPE can greatly reduce the likelihood of serious injuries in the event of accidental contact with live conductors or components.

While distance from live parts, training and certification of personnel, and voltage testing equipment are all important aspects of electrical safety, they do not substitute for the immediate protection that PPE provides during operational tasks. Each component plays a role in creating a safe working environment, but the effective use of personal protective equipment is paramount to manage electrical risks directly associated with shock hazards.