Which safety feature is designed to prevent cranes from hitting their own cables?

The anti-two block device is specifically designed to prevent cranes from striking their own cables, a situation known as "two-blocking." This occurs when the hook or load is raised to the point where it comes into contact with the boom tip or the uppermost point of the crane, which can cause significant damage to both the crane and the load, as well as potentially injuring personnel nearby.

The anti-two block device acts as a safety mechanism that detects when the hook and the boom are too close together and triggers a response to either stop the crane's movement or provide an audible or visual warning to the operator. This feature is critical for enhancing safety during crane operations as it helps ensure that the operator is alerted before a two-block situation can occur, thereby minimizing the risk of accidents.

Other options, while important as well, serve different safety functions. For instance, a load limit device is designed to prevent overloading by limiting the amount of weight that can be lifted. Overhoist protection prevents the load from being lifted too high, which could lead to similar hazards, but it does not specifically address the risk of hitting cables. A stability monitoring system is used to monitor the stability of the crane to prevent tipping or overturning. Each system is essential