An underground power line is a complex system of interconnected components designed to function reliably in a subterranean environment. The key components include:

• Conductor: The core of the cable, typically made of aluminum or copper, that carries the electrical current.

• Insulation: The most critical component. High-quality materials like XLPE (Cross-linked Polyethylene) insulate the conductor, preventing current leakage and protecting it from moisture and chemical damage.

• Conduit: A protective pipe, often made of PVC or HDPE, that houses the cable. It provides a crucial layer of physical protection and allows for easier replacement or repair in the future.

• Accessories: This includes various components that are essential for the system's operation and maintenance, such as cable joints (splices) to connect cable sections and terminations to connect the underground cable to above-ground equipment like transformers.