What would be the approximate MAD for a 15 kV system if you are at 2,942 feet?

In a 15 kV electrical distribution system, the Maximum Allowable Drop (MAD) can be influenced by factors such as the voltage level and the distance from the power source. At higher altitudes, the acceptable voltage drop will generally increase due to the reduced air density and its effects on insulation.

When considering a system at an altitude of 2,942 feet, engineers typically reference standards or guidelines that dictate how much voltage drop is permissible. For a 15 kV system, this is often calculated based on specific formulas that take into account the distance and relevant factors such as load and wire size.

The calculated MAD of approximately 2 feet, 2 inches indicates that this value falls within acceptable limits for the conditions specified. This MAD value helps ensure that the system operates efficiently and effectively without risking damage due to excessive voltage drop, which can compromise the performance of electrical equipment or lead to safety issues.

The other choices may either reflect calculations or considerations not aligned with standard practices for a system at this altitude, hence leading them to be less appropriate for this specific context.