What is the purpose of a voltage verification procedure before servicing electrical equipment?

• A. To confirm the absence of voltage and ensure the area is safe for work.
• B. To measure voltage for maintenance schedule.
• C. To test insulation resistance only.
• D. To calibrate meters.

Answer: (A)

Verifying absence of voltage before servicing is a safety step that proves the equipment is de-energized so you can work without the risk of shock or arc flash. Even after you’ve disconnected power, stored energy, capacitors, or accidental re-energization can still pose a danger, so using a properly rated test instrument to confirm there is no live voltage at the work area is essential. Once you’ve verified absence of voltage, you can follow lockout/tagout procedures and proceed safely with maintenance.

This isn’t about measuring voltage for a maintenance schedule, testing insulation resistance, or calibrating meters. Those tasks serve different aims—planning, assessing insulation health, and ensuring instrument accuracy, respectively.