What is the minimum safe working distance for an unqualified worker in a 115kV yard?

In the context of electrical safety, the minimum safe working distance for unqualified personnel around high-voltage installations is crucial to prevent electric shock and other hazards associated with high-voltage equipment. For a 115kV yard, the distance of 11 feet represents the generally accepted standard in many jurisdictions, designed to maximize safety by ensuring that unqualified individuals remain far enough away from potential electrical hazards.

This specific distance is based on standards established by organizations such as the National Electrical Safety Code (NESC) and other regulatory bodies that govern electrical safety. The rationale behind this distance is to create a buffer zone that reduces the risk of electrical arcs, which can occur as voltages increase. Staying within this minimum distance helps to protect unqualified workers who may not be trained to recognize and avoid electrical hazards associated with high-voltage equipment.

Using distances that are either greater or lesser than this standard could put unqualified individuals at risk. A distance of 18 feet, for instance, may be overly cautious in certain scenarios, though it provides additional safety. However, while it is beneficial to have such buffer zones, the established minimum for unqualified personnel in the given situation is 11 feet, balancing safety with practicality in operational settings.