Why is it critical to maintain clearance from power lines during crane operations?

Maintaining clearance from power lines during crane operations is crucial primarily to minimize the risk of electric shock. When a crane or its load comes into contact with, or is too close to, power lines, there's a significant danger of electrical current passing through the crane itself or the load. This could result in serious injury or even fatalities for the operator and ground crew. Additionally, the risk of fire and electrical equipment damage increases in such scenarios.

While load swinging can be a concern, it is not directly related to the proximity of power lines. The completion speed of a project or the reduction of operating costs is also not directly influenced by clearance from power lines, even though safe operations can lead to better overall project management. However, the foremost priority is always safety, particularly regarding electrical hazards, making the minimization of electric shock risk the critical reason for maintaining safe clearance distances from power lines.