Portable cord and plug connected equipment and flexible cord sets shall be visually inspected _______________ for external defects.

The correct answer emphasizes the importance of safety and functionality by requiring that portable cord and plug connected equipment and flexible cord sets undergo a visual inspection before use on any shift. This practice ensures that any potential hazards, such as frayed cords, damaged plugs, or other external defects, are identified and addressed prior to the equipment being used.

By conducting these inspections immediately before use, it minimizes the risk of electrical hazards and accidents in the workplace, as operators can be assured that the equipment is in proper working condition. This approach aligns with safety protocols that advocate for regular checks of equipment to maintain a secure environment.

Although inspecting equipment before the end of a shift, monthly, or every 24 hours can be beneficial practices, they do not ensure that the equipment is safe for immediate use. The critical aspect is the timeliness of the inspection relative to when the equipment is going to be used, making the requirement to inspect before use on any shift the most effective and responsible choice.