What is the minimum clearance required for non-qualified workers near 50-200kV lines?

The minimum clearance required for non-qualified workers near 50-200kV lines is 15 feet. This distance is established to ensure the safety of individuals working near high voltage power lines. The reasoning behind this requirement is rooted in the risk of electrical shock or arc flash hazards, which can occur when individuals are too close to energized conductors.

Maintaining a clearance of 15 feet helps minimize the potential for accidental contact or induced voltages that can harm someone who is not trained or equipped to work in these hazardous areas. This distance is consistent with safety regulations and guidelines set forth by various organizations, including the Occupational Safety and Health Administration (OSHA) and the National Fire Protection Association (NFPA), which emphasize the importance of protecting workers near electrical infrastructure.

In contrast, other options like 5 feet, 10 feet, or 20 feet do not align with the established safety standards for working near high voltage lines. A smaller distance may expose workers to unnecessary risk, while a larger one may not be necessary and could lead to inefficiencies in job performance. Thus, 15 feet serves as a balanced and widely accepted standard for maintaining safety in these environments.