Where is the operating handle for a tap changer on a transformer typically located?

The correct answer is that the operating handle for a tap changer on a transformer is typically located outside of the tank or inside the tank above the oil level. This position allows for easier access and operation without the need to remove the transformer from service for adjustments.

When the tap changer is located outside, it provides a more convenient means for operators to adjust voltage levels based on the changing load conditions without having to deal with the complexities of working with oil-filled environments. If it is positioned inside the tank but above the oil level, this still protects it from potential damage while allowing operators to reach it for adjustments.

This design consideration ensures that tap changes can be made efficiently and safely while minimizing maintenance interruptions and maximizing transformer performance.