The car must be capable of safely lowering, stopping, and holding at what load percentage?

The correct answer is determined by safety standards governing elevator operations. The requirement for a car to safely lower, stop, and hold regarding its load capacity is typically set at a percentage that provides a margin for safety under various conditions. In this case, being capable of operating under 125% of its rated load ensures that the hoisting mechanism can adequately withstand overload scenarios.

This percentage accounts for potential weight variances, dynamic forces that occur during operation, and ensures that the system can reliably bring the car to a stop without risk of failure even under potentially hazardous conditions. Moreover, it incorporates a safety factor that is crucial in preventing accidents, reinforcing the car's ability to manage unexpected situations where additional weight might be in the car beyond what's typically expected.

Generally, specifications like these are designed to uphold safety protocols in the elevator industry to protect passengers and maintain system integrity. Hence, a requirement of 125% is established as a standard to ensure both safety and performance.