What additional clearance is required for every 10kV over 50kV?

The correct answer of 4 inches aligns with the National Electrical Safety Code (NESC) standards, which dictate safe clearance requirements for overhead power lines. For every 10kV over the initial 50kV, an additional clearance of 4 inches is mandated to ensure safety from electrical hazards.

This clearance is essential for protecting individuals and equipment from accidental contact with high-voltage lines, which can result in electrical shock or fires. The requirements ensure that there is a sufficient buffer between the electrical lines and any nearby structures, equipment, or personnel, particularly in environments where work is performed at heights, such as telecommunications tower sites. By adhering to these clearance standards, technicians can mitigate the risks associated with high-voltage electricity and maintain a safe working environment.