How frequently should underground cable circuits be walked for inspection by a lineman?

The recommended inspection frequency for underground cable circuits is generally set at every 2 years. This timeframe is based on the need for regular maintenance to ensure that the infrastructure is functioning correctly and to detect any potential issues before they develop into more significant problems. Inspecting every 2 years allows linemen to monitor the condition of the cables, assess for water ingress, check for physical damage, and ensure that the surrounding environment has not changed in ways that could affect cable performance.

This approach helps in maintaining a high level of reliability in the electrical distribution system and minimizes the risk of failures that could lead to outages. By balancing the inspection frequency, utility companies can optimize maintenance costs while enhancing the overall integrity and safety of the underground cable systems.