What characteristic must head protection for electrical work possess?

Head protection for electrical work must be nonconductive to ensure the safety of the worker. Nonconductive materials prevent the conduction of electricity, which is vital in environments where electrical hazards are present. Wearing headgear made from nonconductive materials reduces the risk of electrical shock in the event of accidental contact with energized equipment, wires, or components.

While being lightweight can contribute to comfort during use, and color-coding can be significant for identifying different types of protective gear, these aspects are secondary to the primary requirement of ensuring electrical safety through nonconductivity. Insulation, while essential in many protective equipment designs, specifically refers to the material's ability to resist electrical flow but is not the primary characteristic that defines the proper head protection for electrical work. Hence, the emphasis on nonconductivity is crucial in preventing injuries and ensuring safe working conditions.