What is the minimum safe working distance for an unqualified worker in a 500kV yard?

The minimum safe working distance for an unqualified worker in a 500kV yard is established to ensure safety from electrical hazards that can occur with high-voltage equipment. According to industry standards, individuals who are not qualified electricians must maintain a certain distance from live electrical components to prevent electrical accidents, such as electric shock or arc flash.

For a 500kV yard, the recommended minimum safe working distance is indeed 18 feet. This distance provides a considerable buffer to ensure that unqualified personnel are not exposed to potentially dangerous electrical fields or accidental contact with energized parts.

Additionally, this distance is based on the guidelines set by organizations like the National Electrical Safety Code (NESC) and industry best practices, reflecting a consensus on the risks associated with high voltage. Shorter distances could place unqualified workers at increased risk, underscoring the importance of adhering to the established guidelines for safety.