What is the difference between a sling's rated capacity and its Working Load Limit (WLL)?

The distinction between a sling's rated capacity and its Working Load Limit (WLL) is crucial for understanding safe lifting practices. Rated capacity refers to the maximum load that a sling is designed to handle under ideal conditions without any modifications or additional factors. On the other hand, the WLL incorporates a safety factor that accounts for conditions that can affect the integrity of the sling during use. This safety factor is essential because it considers factors such as wear, environmental conditions, and potential shock loads, which can reduce the sling's effective capacity.

By using the WLL as a guideline, riggers can ensure that they do not overload the sling, thereby maintaining safety and reliability in lifting operations. It's important to remember that while rated capacity provides a baseline, the WLL is what should be used in practical applications to factor in safety margins. This understanding is vital for ensuring that all lifting processes are performed safely and effectively.