Final answer:
Before working on a de-energized circuit, it is crucial to verify that the circuit is indeed de-energized to prevent accidents. This step is consistent with OSHA standards for electrical safety. Additional safety practices, such as working one-handed and utilizing circuit breakers and GFCIs, are also important for preventing electrical hazards.
Step-by-step explanation:
The big thing to do before beginning work on a de-energized circuit is to verify the circuit is de-energized. This is a critical step in the lockout/tagout process to ensure that all electrical energy has been properly isolated to prevent accidental energization of the circuit while maintenance is being performed. Verifying the circuit is de-energized is essential for electrical safety and is in accordance with Occupational Safety and Health Administration (OSHA) standards.
When working with high-power electric circuits, it is advised to work "one-handed" or "keep one hand in your pocket". This is to prevent the completion of an electrical circuit across the chest, which can result in a more dangerous shock, as the current could pass through the heart. Utilizing safety features in electric circuits, such as circuit breakers, the three-wire system, and ground fault circuit interrupters (GFCIs), is crucial for preventing thermal and shock hazards in both household and industrial settings. These safety systems protect by interrupting excessive currents and providing a safe path to Earth, significantly reducing the risk of electric shock.