What is the maximum percent of the rated capacity of a crane that can be used to lift personnel?

The correct answer reflects the industry standard regarding the safe lifting capacity when it comes to personnel. Lifting personnel using a crane is governed by strict safety regulations to ensure the well-being of workers being lifted. A common guideline stipulates that cranes should not be used to lift personnel at more than 50% of their rated capacity. This precaution helps to ensure there is adequate margin for safety, accounting for dynamic loads, unexpected movements, and potential tipping.

When a crane is utilized to lift personnel, the load being lifted is not just the weight of the personnel, but it also includes equipment, tools, and any safety gear. By adhering to the 50% limit, crane operators help minimize risks associated with potential equipment failure or sudden shifts in weight, thereby ensuring a safer work environment.

This safety regulation is in contrast to the other percentage options which exceed this recommended limit, hence why they are not considered correct.