What should be done before working on any electrical equipment?

Prior to working on any electrical equipment, it is crucial to de-energize the equipment and verify that it is off. This practice is a core aspect of electrical safety protocols. Ensuring that the equipment is not energized reduces the risk of electric shock or other injuries that could occur if the equipment were to be inadvertently activated while being worked on.

Verification of the de-energized state involves testing with appropriate, properly rated voltage testers to confirm that no electrical power is present. This step is vital as it creates a safe working environment for electricians and technicians, allowing them to perform their tasks without the fear of electrocution.

While other actions related to safety and preparation are important, such as reviewing equipment manuals or wearing safety goggles, they do not replace the foundational need to ensure that the equipment is de-energized as the first step in maintenance or repair activities. Climbing a ladder or reviewing manuals can happen after the electrical safety procedures have been thoroughly observed and followed.