Which steps should you take to verify a circuit is de-energized before work begins?

Which steps should you take to verify a circuit is de-energized before work begins?

• A. Power off the main disconnect and assume de-energized
• B. Use calibrated voltage tester, test at the point of work, confirm zero energy, and re-test with a second qualified person if required
• C. Ask a coworker
• D. Visually inspect the equipment and rely on memory

Answer: (B)