Electrical lines are typically buried at a depth of around 24 inches (2 feet). This is the common minimum depth for high-voltage electrical cables when they are directly buried underground. However, the depth can vary depending on local regulations and the type of conduit used. For example, if electrical wires are placed inside a plastic PVC conduit, the burial depth may be about 18 inches, while for rigid metal conduit, the depth may be only about 12 inches. Low-voltage landscape lighting wires need to be buried at least 6 inches deep. High voltage or primary electrical lines might sometimes be buried deeper, around 3 feet or more, depending on local requirements and safety considerations. In summary:

• Standard electrical lines (high voltage) are buried at about 24 inches (2 feet).
• PVC conduit electrical lines can be buried around 18 inches.
• Metal conduit lines can be buried around 12 inches.
• Low voltage landscape wires require 6 inches minimum depth.
• High voltage or main electrical lines may be buried 3 feet or deeper in some areas.

These depths are based on safety codes and general utility practices to protect the lines and reduce risk of damage or accidents during digging.