What precaution should be taken during electric welding?

During electric welding, protecting the face and the eyes is crucial due to the intense light emitted during the welding process, particularly the infrared and ultraviolet radiation. This light can cause severe burns to the skin and eyes, commonly known as "arc eye" or photokeratitis. These conditions can lead to temporary or even permanent loss of vision, making it imperative that welders wear appropriate protective gear, such as helmets with tinted visors or safety glasses specifically designed for welding.

While wearing gloves, using a respirator, and ensuring proper ventilation are also important safety measures in welding operations, they primarily address other hazards associated with the process. For instance, gloves protect hands from heat and sparks, respirators protect from harmful fumes, and ventilation is necessary to reduce exposure to toxic gases. However, the immediate and direct threat to vision from the welding arc highlights why facial and eye protection is critical in this context.