What safety measure is critical when working on electrical systems?

Using personal protective equipment (PPE) is critical when working on electrical systems because it serves as a primary defense against electrical hazards. PPE includes items such as insulated gloves, safety goggles, hard hats, and voltage-rated tools, all of which help protect technicians from electrical shocks, burns, and other injuries that could occur while handling live wires or working near energized equipment.

This safety measure is crucial in ensuring that technicians are shielded from potential electrical faults, which can lead to severe injuries or even fatal accidents. Proper training emphasizes the importance of wearing appropriate PPE to mitigate risks and safeguard the technician's health while performing their duties.

In contrast, increasing the voltage introduces greater risk and does not enhance safety. Minimizing the workforce could lead to oversight and inadequate safety practices, while working alone can increase danger without immediate assistance available in case of an emergency. Each of these approaches does not prioritize safety in the same way that using personal protective equipment does.