What is the Restricted Approach Boundary for a 69kV system?

The Restricted Approach Boundary for a 69kV system is established to ensure safety for individuals working near electrical equipment. In general, the Restricted Approach Boundary refers to the minimum distance that unqualified personnel are allowed to approach exposed energized parts. For a 69kV system, the 3 feet 6 inches distance is consistent with industry guidelines that aim to minimize the risk of electrical shock and ensure that adequate protection is in place. This boundary is determined based on the voltage level, taking into account the potential for voltage arcing and the importance of maintaining a safe working environment when dealing with high-voltage systems. The regulations and standards set by organizations such as the National Electrical Safety Code (NESC) inform these distances, aligning with best practices in electrical safety.