What is the limited approach boundary distance for a fixed circuit part operating at 480 volts?

The limited approach boundary for electrical work refers to the distance from a live electrical part within which a person must take specific safety precautions to avoid electric shock or injury. For a fixed circuit part operating at 480 volts, the National Fire Protection Association (NFPA) 70E standard provides guidelines for determining these distances according to the voltage level.

In the context of 480 volts, the limited approach boundary distance is established to ensure that individuals maintain a safe distance from the energized part, thereby minimizing the risk of electric shock. The boundary is set at 3.5 feet for circuits operating at this voltage level, indicating that anyone entering this area must have appropriate training and personal protective equipment (PPE) to work safely.

Understanding these boundaries is crucial for ensuring safety in the workplace, as it not only protects individuals performing electrical work but also enhances overall safety protocols in environments where electrical hazards exist. Knowing the correct boundary distance allows workers to stay at a safe distance unless they are properly equipped and qualified to work closer to the energized part.