When buried 18 inches or more below grade, how should direct-buried service conductors' location be indicated?

Indicating the location of direct-buried service conductors is crucial for ensuring safety and preventing accidental damage during excavation or landscaping. When these conductors are buried 18 inches or more below grade, a warning ribbon must be placed at least 12 inches above them. This ribbon serves as a clear visual warning to anyone digging in the area, alerting them to the presence of buried electrical infrastructure.

Using a warning ribbon is an effective method because it provides immediate recognition before any digging occurs, potentially preventing injuries or electrical outages. The placement of the ribbon must adhere to this specific height to ensure visibility and compliance with safety standards outlined in the National Electrical Code. The code emphasizes that proper identification of buried conductors is essential for worker safety and system integrity.