What is the limited approach boundary distance for an overhead line conductor operating at 480 volts?

The limited approach boundary distance is crucial for ensuring safety around overhead line conductors. For voltages up to 600 volts, which includes the 480-volt overhead line conductor mentioned in the question, the established limited approach boundary is 10 feet. This distance is designed to protect workers from electric shock hazards and maintain a safe working environment.

In the context of NFPA 70E guidelines, the limited approach boundary is the distance where unqualified personnel must not go without implementing proper safety measures, such as personal protective equipment or working under the supervision of qualified personnel. The purpose of this boundary is to minimize the risk of accidental contact with energized parts, which can lead to severe injuries or fatalities.

The values associated with the limited approach boundaries increase as the voltage increases, and being aware of these specific boundaries helps in planning safe work practices and ensuring compliance with safety standards in electrical work environments. Understanding and adhering to this standard distance is essential for the safety of all personnel working near high-voltage electrical systems.