What safety measure must be in place when working with energized circuits?

When working with energized circuits, the use of personal protective equipment (PPE) is essential for ensuring the safety of the technician. PPE may include items such as insulated gloves, helmets, face shields, flame-resistant clothing, and safety shoes. This equipment provides a barrier between the worker and potential electrical hazards, significantly reducing the risk of injury from electric shock, arc flash, or other dangerous situations that may occur when handling live electrical components.

While other measures mentioned may complement safety practices — such as wearing safety glasses to protect against flying debris, ensuring good ventilation in case of fumes or gases, and standing on a rubber mat to reduce the risk of ground faults — they do not collectively provide the comprehensive protection that PPE offers. PPE is specifically designed to address the unique dangers presented by working with energized circuits, and wearing it is a critical standard in electrical safety protocols.