An underground electrical distribution network is a sophisticated system of interconnected components designed to deliver power from a substation to end-users. The key components include:

1. underground Cables: These are the most critical part of the system. They are specially designed with multiple layers, including a conductor, insulation, and a protective outer sheath, to withstand the harsh underground environment and moisture.

2. Conduit and Manholes: In a "draw-in" system, rigid conduits (pipes) are laid in a trench, providing a protective pathway for the cable. Manholes and vaults are strategically placed at junctions and bends to serve as access points for installation, splicing, and maintenance.

3. Transformers and Switchgear: These are typically installed in pad-mounted or submersible enclosures at ground level. They are essential for stepping down voltage and protecting the system from faults.

4. Cable Accessories: These include a range of specialized products, such as terminators and splices, which create sealed, insulated connections where cables meet equipment or are joined together.