What is the minimum depth required for underground primary installations?

The minimum depth required for underground primary installations is typically 42 inches. This depth is established to ensure appropriate protection from various surface activities and potential damage from objects such as tools, heavy machinery, or vehicles. Additionally, burying primary cables at this depth minimizes the risk of accidental contact, which is crucial for both safety and compliance with industry standards.

Furthermore, the specified depth also takes into account factors such as frost line considerations, soil conditions, and local codes, which may vary. When installations meet the 42-inch requirement, it helps to safeguard the integrity of the cables and ensures reliable service, reducing potential downtime caused by external factors. Understanding this depth is vital for anyone involved in electrical installations, as it pertains directly to safe and effective operational practices.