What is required before performing work on electrical circuits?

Before performing work on electrical circuits, it is crucial to de-energize the circuit and verify that it is safe to work on. This process is essential for ensuring the safety of individuals working on or near the electrical system. De-energizing the circuit involves turning off the power at the circuit breaker or fuse box, which prevents any accidental energization while work is being conducted.

Once the circuit is turned off, it is also necessary to verify that the circuit is indeed de-energized. This can be done using a voltage tester to check for the presence of electricity in the wires. This step helps to confirm that there is no risk of electric shock, allowing the electrician to work safely without the fear of being injured by live electrical current.

Other options may contribute to a safe working environment but do not address the fundamental requirement of ensuring that the circuit is not energized. For example, merely resetting a circuit breaker does not guarantee safety, and replacing wiring or using rubber gloves does not substitute for the crucial steps of de-energizing and verifying the circuit. Therefore, de-energizing the circuit and ensuring it is safe to work on are the foundational steps in electrical safety practices.