What protection is required within 48 inches of live electrical parts according to NFPA 70?

The correct answer is that PPE clothing including flame-resistant clothing is required within 48 inches of live electrical parts according to NFPA 70. This requirement is based on the need for adequate protection against potential electrical arc flash hazards. Flame-resistant (FR) clothing is designed to resist ignition and continue to provide thermal protection even after exposure to sparks or flames.

In environments where live electrical parts are present, particularly within the specified proximity, workers are at risk of arc flash incidents, which can result in severe thermal burns and other injuries. The use of flame-resistant clothing minimizes this risk by providing a protective barrier against the intense heat and potential fire hazards associated with electrical work.

Other options, while relevant to safety in general, do not specifically address the protection required for working near live electrical parts. Standard work boots might be necessary for foot protection but do not address flame and thermal hazards. Heat-resistant gloves are not sufficient on their own for protection against electrical hazards, and regular safety gear might not meet the specific requirements outlined in NFPA 70 for the electrical work environment. Therefore, the emphasis on PPE clothing including flame-resistant clothing aligns with regulatory guidelines to ensure the safety of individuals working in such high-risk areas.