What is the required burial depth for supply conductors or cables operating at 601 to 22,000 volts?

The required burial depth for supply conductors or cables operating at 601 to 22,000 volts is 30 inches. This specification is established to ensure adequate protection of the conductors from accidental damage due to surface activities and to limit the risk of electrical hazards. The depth helps to minimize the likelihood of interference with existing utilities while allowing for safe installation procedures.

Choosing a burial depth of 30 inches is crucial because it aligns with national electrical codes and safety practices, which aim to ensure that high-voltage lines are suitably protected. Conductors at this voltage level are typically used for utility distribution, so careful consideration of their placement in relation to the ground surface and proximity to other underground structures is essential for public safety and system reliability.

In contrast, the other depth options either do not meet the necessary safety standards for this voltage range or are designed for lower voltage systems. Hence, understanding these regulations is vital for anyone involved in installations or assessments concerning public utilities.