Under NFPA 70E, only qualified persons are permitted to perform tasks such as testing, troubleshooting, and voltage measuring on electrical equipment under what condition?

• A. Where an electrical hazard exists
• B. In any routine maintenance
• C. Only during daytime hours
• D. In non-hazardous environments

Answer: (A)

In NFPA 70E, the ability to perform testing, troubleshooting, and voltage measuring on electrical equipment is restricted to qualified persons whenever an electrical hazard exists. A qualified person is someone who has been trained to recognize electrical hazards and to work safely around energized parts, including knowing how to select and use the appropriate PPE and safety procedures. The rule is driven by the risk of electric shock and arc flash, so the hazard itself dictates who is permitted to carry out those tasks. The other options don’t fit because the standard’s limitation isn’t based on routine maintenance, the time of day, or being in a “non-hazardous” environment; the controlling factor is the presence of an electrical hazard.