Which description best characterizes the safety approach to energized equipment as recommended by OSHA?

Which description best characterizes the safety approach to energized equipment as recommended by OSHA?

• A. De-energize all equipment before work whenever possible.
• B. Test the equipment but assume it is de-energized until proven energized.
• C. Treat all equipment as energized and test to prove otherwise.
• D. Do not test equipment, rely solely on training.

Answer: (C)

OSHA emphasizes a cautious mindset around energized equipment: don’t assume a circuit is safe just because you can’t see a source of energy. The recommended approach is to treat all equipment as energized and verify that it is de-energized by testing before you work on it. This ensures you don’t overlook hidden or stored energy, potential re-energization, or a missed lockout/tagout. To do this correctly, you first verify the tester and instruments are functioning by testing on a known live source, then test the circuit or equipment in the area you’ll be working on to confirm there is no voltage or stored energy present. If de-energizing is possible and practical, that’s the safest route, but when it isn’t feasible, applying the “assume energized until proven otherwise” rule helps protect workers from shock or arc flash.

OSHA emphasizes a cautious mindset around energized equipment: don’t assume a circuit is safe just because you can’t see a source of energy. The recommended approach is to treat all equipment as energized and verify that it is de-energized by testing before you work on it. This ensures you don’t overlook hidden or stored energy, potential re-energization, or a missed lockout/tagout.

To do this correctly, you first verify the tester and instruments are functioning by testing on a known live source, then test the circuit or equipment in the area you’ll be working on to confirm there is no voltage or stored energy present. If de-energizing is possible and practical, that’s the safest route, but when it isn’t feasible, applying the “assume energized until proven otherwise” rule helps protect workers from shock or arc flash.