Before inspecting a lamp, what should you do with the lighting unit?

• A. Turn on to check brightness
• B. Unplug lighting units
• C. Remove the lamp while powered
• D. Apply lubricant

Answer: (B)

Unplugging the lighting unit before inspection is essential because it de-energizes the circuit, eliminating the risk of electric shock, short circuits, or arcing if you touch live parts or the switch is moved. It also guarantees the unit cannot be powered accidentally during the inspection. If unplugging isn’t possible, switch off at the circuit breaker and use lockout/tagout to prevent re-energizing, then verify with a voltage tester that there is no voltage present.

Choosing to turn the unit on to check brightness would expose you to live electricity and potential shocks. Removing the lamp while it’s powered keeps the circuit energized, creating risk of shock or a sudden startup. Applying lubricant is unnecessary for a safety inspection and could contaminate electrical contacts or create other hazards.