Which concepts were included in the 1995 edition of NFPA 70E?

• A. Limits of approach and the establishment of an arc
• B. Arc rating and ATPV
• C. Flash protection boundaries and PPE
• D. Energized electrical work permit and labeling

Answer: (A)

The question tests what topics were part of NFPA 70E in its 1995 edition by focusing on the foundational safety concepts it established at that time. In that edition, the emphasis was on defining safe working distances from live parts and on identifying where an arc flash could occur so that protective measures could be applied. This is why limits of approach—the distances workers must respect to stay out of danger from energized parts—and the establishment of an arc boundary were included. These ideas give the basic framework for preventing electric shock and arc exposure in the first place, guiding how work is planned and how PPE and procedures are chosen.

Other topics mentioned—arc ratings and ATPV, the combination of flash protection boundaries with PPE, and the use of energized electrical work permits and labeling—are important aspects of electrical safety but were developed, refined, or formalized more fully in later NFPA 70E editions. They represent advancements and expansions beyond the core concepts introduced in 1995.

So, the inclusion of limits of approach and the arc boundary in that edition reflects its era’s emphasis on establishing safe distances and arc-aware boundaries as the starting point for electrical safety in the workplace.