What are electrical workers required to do with all circuits before beginning maintenance?

• A. Inspect all fuses and breakers
• B. De-energize and lockout/tagout circuits
• C. Test circuits for continuity
• D. Replace any damaged circuit components

Answer: (B)

Electrical workers are required to de-energize and lockout/tagout circuits before beginning maintenance to ensure their safety. The lockout/tagout procedure is a critical safety practice that prevents the accidental energization of equipment while maintenance or repair work is being performed. This process involves isolating the energy sources and placing a lock or tag on the power source to indicate that work is being conducted and to prevent any unauthorized re-energization.

By de-energizing and using lockout/tagout, workers can safely perform maintenance tasks without the risk of electric shock or electrical accidents. This is a fundamental requirement under OSHA regulations, which aim to establish safety measures that protect workers in potentially hazardous environments.

The other options might concern aspects of maintenance, but none provide the level of safety assurance offered by the lockout/tagout procedure. Inspecting fuses and breakers, testing circuits for continuity, or replacing damaged components are all important tasks but do not ensure that the circuits are safe to work on until proper lockout/tagout protocols are followed. Thus, de-energizing and locking out/tagging circuits is the essential first step that establishes a safe working environment for maintenance activities.