Scenario Overview
Direct burial optical cable is deployed in scenarios where underground conduit systems are unavailable or impractical — such as road crossings, perimeter routes, farmland boundaries, and inter-building paths. The cable must withstand direct soil pressure, vehicle loads, moisture ingress, and potential rodent damage.
Unlike duct cable, direct burial cable is the last line of defense — once damaged, repair requires excavation, which is costly and disruptive. Selection must prioritize long-term protection over short-term cost savings.
Key Requirement
Armored double-sheathed structure is mandatory. Steel tape or steel wire armor provides crush resistance; double PE sheath provides moisture and chemical protection.
