What is the minimum distance unqualified persons must maintain from an overhead line energized at 4,160v?

The correct answer is based on safety guidelines regarding the minimum approach distance that unqualified persons should maintain from overhead electrical lines energized at 4,160 volts. For voltages in this range, the National Electrical Safety Code (NESC) provides recommendations to ensure safety and prevent electrical accidents.

Unqualified persons typically refer to individuals who are not trained or authorized to work on or near energized electrical conductors. According to standard safety practices, maintaining a distance of 10 feet from overhead lines energized at this voltage is essential to reduce the risk of electric shock or injury. This distance helps to ensure that individuals do not inadvertently come into contact with or get too close to the energized conductors, mitigating the risk of accidents.

Options reflecting distances that are either less than or greater than 10 feet do not align with the established safety standards for voltage levels around 4,160 volts. Understanding the correct minimum safe distance is crucial for promoting electrical safety in environments where unqualified persons may be present near overhead lines.