At what altitude is the MAD adjusted to 2 feet, 5 inches for a 4.16 kV system?

The correct answer indicates that at an altitude of 7,450 feet, the Minimum Approach Distance (MAD) is adjusted to 2 feet, 5 inches for a 4.16 kV electrical system. This adjustment is important because, as altitude increases, the air density decreases, which can affect the insulating properties of air. Higher elevations require modified clearance distances to maintain safety standards and prevent electrical arcing.

In this case, the MAD is specifically designed to provide adequate safety margins to ensure that there is no accidental contact with the electrical infrastructure. At 7,450 feet, environmental factors and atmospheric conditions necessitate this particular adjustment to the distance, maintaining safe operational practices for personnel working near energized equipment. Understanding the relationship between altitude, electrical systems, and required clearances is crucial for safe operations in various environments.