What is the minimum clearance distance for electrical systems operating over 50 KV?

The correct answer reflects the established safety guidelines for minimum clearance distances for electrical systems operating over 50 KV. In many safety standards, maintaining adequate clearance is critical to prevent electrical hazards and ensure worker safety. The formula of 10 + 4 inches for every 10 KV over 50 KV aligns with these standards, providing a systematic approach that increases the clearance distance as the voltage increases, helping to mitigate risks associated with higher voltage systems.

In practical terms, this means that as the voltage level rises, the minimum distance between energized conductors and any nearby structures or personnel must also increase. This is crucial in reducing the potential for electrical arching and ensuring that any accidental contact can be avoided, thereby enhancing safety for both workers and equipment.

The other options do not provide the recognized safety margins that are essential for adequately protecting individuals and property from high-voltage electrical exposure.