What is the required depth for underground electrical service conductors?

The required depth for underground electrical service conductors is 24 inches. This depth is specified to ensure that the conductors are adequately protected from physical damage and accidental disturbance from surface activity. Buried conduits or cables at this depth are less likely to be hit by shovels or other digging equipment. Additionally, this depth helps mitigate the risk of electrical hazards caused by environmental factors, such as moisture or soil acidity, which can lead to conductor deterioration.

This requirement is part of the National Electrical Code (NEC) guidelines and local regulations, which aim to ensure safety in electrical installations. The chosen depth of 24 inches strikes a balance between safety, accessibility for future maintenance, and practicality for installation.