What should be done before starting electrical work on a circuit?

Before starting electrical work on a circuit, de-energizing the circuit and verifying it is not live is essential to ensure the safety of the individual performing the work. This step is crucial because working on an energized circuit poses significant risks, such as electric shock or electrocution, which can result in serious injuries or fatalities.

By de-energizing the circuit, you remove the electrical supply from the work area, creating a safe environment to perform necessary tasks. Furthermore, verifying that the circuit is not live can be done using appropriate testing tools, such as a voltage tester or multimeter, to confirm that no voltage is present. This verification step is critical as it provides an additional layer of safety, ensuring that any potential residual energy is accounted for before the electrical work begins.

While notifying the local utility company, installing a circuit protector, and checking the circuit for grounding are all important elements of electrical maintenance and safety protocols, they do not directly address the immediate need for safety when starting work on a live circuit. Hence, the primary focus must always be on ensuring the circuit is de-energized and safe to work on.