At an altitude of 7,450 feet and working on a 4.16 kV system, what is your approximate MAD?

To determine the Minimum Approach Distance (MAD) at an altitude of 7,450 feet on a 4.16 kV system, it is essential to consider how the altitude affects the dielectric strength of the air and subsequently the MAD. As altitude increases, the air density decreases, which reduces the air's insulating properties. This change necessitates a larger MAD to maintain safety and avoid electrical hazards.

The MAD for energized conductors is typically specified in industry standards. For example, for a 4.16 kV system, the standard MAD at sea level is usually calculated around 2 feet. However, for each 1,000 feet of altitude gain, the recommended distance for MAD often increases due to the aforementioned effects of reduced air density.

At 7,450 feet, applying the altitude correction factor leads to an increase from the typical standard. This calculation would yield the adjusted MAD based on the elevation, which typically results in approximately 2 feet, 5 inches as a reasonable distance required for safety from the energized components in that environment.

Thus, the answer reflecting this adjustment for altitude, taking into account the safety protocols for working near high voltages, aligns with 2 feet, 5 inches, making it the appropriate choice.