What is the best way to work on electrical equipment?

• A. The equipment should be de-energized
• B. Work energized with PPE
• C. Turn off only the equipment lights
• D. Ignore voltage testing

Answer: (A)

The safest approach to working on electrical equipment is to remove the energy source and isolate the equipment so nothing can energize it. De-energizing eliminates the risk of shock, arc flash, and unintended startup as you work. After turning off power, apply lockout/tagout to prevent anyone from restoring energy, and verify with a properly rated tester that there is no voltage present before you touch anything. While PPE is important for safety, it does not remove live energy, so working energized—even with PPE—poses ongoing hazards. Turning off only the lights does not guarantee the equipment is de-energized, and ignoring voltage testing can leave hidden or stored energy active. By first de-energizing and isolating the equipment and then confirming zero energy, you reduce the primary hazards and create a safer work environment.