When working on a 15 kV system at 2,942 feet, what is your MAD?

When working on a 15 kV system at 2,942 feet, what is your MAD?

• A. 2 feet, 2 inches
• B. 3 feet, 1 inch
• C. 4 feet, 4 inches
• D. 2 feet, 10 inches

Answer: (A)

To determine the Minimum Approach Distance (MAD) for a 15 kV system at an elevation of 2,942 feet, it is crucial to consider the guidelines and regulations regarding electrical safety in high voltage environments. The MAD is primarily influenced by the voltage of the electrical system and any adjustments required for altitude. For systems operating at 15 kV, the standard MAD at ground level is typically around 2 feet, 2 inches. However, this distance may need to be modified based on the altitude because as elevation increases, the air's insulating properties change—more distance may be necessary in higher elevations. In this case, while working at 2,942 feet—almost at the threshold of where some adjustments may be considered—the calculated MAD does not change significantly from the basic requirement due to the relatively modest height. Therefore, the MAD remains at 2 feet, 2 inches, making it the appropriate safety distance to maintain. This choice corresponds precisely with established safety standards, which advocate maintaining a safe distance from electrical systems to prevent accidental contact and ensure personnel safety during maintenance or other work activities.

To determine the Minimum Approach Distance (MAD) for a 15 kV system at an elevation of 2,942 feet, it is crucial to consider the guidelines and regulations regarding electrical safety in high voltage environments.

The MAD is primarily influenced by the voltage of the electrical system and any adjustments required for altitude. For systems operating at 15 kV, the standard MAD at ground level is typically around 2 feet, 2 inches. However, this distance may need to be modified based on the altitude because as elevation increases, the air's insulating properties change—more distance may be necessary in higher elevations.

In this case, while working at 2,942 feet—almost at the threshold of where some adjustments may be considered—the calculated MAD does not change significantly from the basic requirement due to the relatively modest height. Therefore, the MAD remains at 2 feet, 2 inches, making it the appropriate safety distance to maintain.

This choice corresponds precisely with established safety standards, which advocate maintaining a safe distance from electrical systems to prevent accidental contact and ensure personnel safety during maintenance or other work activities.