What is the required height for high voltage power lines above surface work areas?

High voltage power lines must maintain a minimum clearance of 15 feet above any surface work areas to ensure safety for workers and equipment. This specific height is crucial in preventing electrical hazards caused by accidental contact with the power lines. The risk of electrocution increases significantly when workers, tools, or machinery come too close to high voltage power lines, which can lead to serious injuries or fatalities.

The requirement of 15 feet provides a margin of safety to accommodate the maximum reach of equipment, any potential overhead movement, and the factors that may affect the height of the power lines, such as sag due to temperature changes. Thus, ensuring that power lines maintain this minimum clearance is vital for creating a safe working environment near high voltage systems.