Which key safety practice must be followed during electrical work?

De-energizing circuits before working on them is a fundamental safety practice in electrical work. This step is crucial because it prevents the risk of electric shock, injuries, or even fatalities that can occur if someone inadvertently comes into contact with live electrical components. By turning off the power and ensuring that the circuits are not energized, workers can safely handle, inspect, or repair electrical systems without the fear of electrical current causing harm.

This practice also allows for the use of lockout/tagout procedures, which further ensures that circuits cannot be accidentally re-energized while maintenance is being performed. Having a work environment that prioritizes this safety measure establishes best practices for electrical safety and significantly reduces the likelihood of accidents during electrical operations.