What is the minimum required separation between underground radio and television conductors and power or Class I circuit conductors?

The minimum required separation between underground radio and television conductors and power or Class I circuit conductors is 12 inches. This requirement is established to prevent electromagnetic interference that could affect the performance of radio and television signals. When conductors are buried close together, especially when one is carrying high voltage, there is a risk of electrical noise or cross-talk that can distort the signals of the radio and television lines.

Maintaining a separation of 12 inches provides an essential buffer zone that helps ensure the integrity and reliability of both power and communication systems. This separation is guided by the principles of electrical safety and signal integrity, which are critical in ensuring that both types of conductors can operate effectively without one compromising the other. By adhering to this minimum spacing, installation practices align with established codes and standards that aim to protect both equipment and users from potential interference or safety hazards.