The method of laying underground cables depends on the project's scale, budget, and the terrain. There are three primary methods:

1. Direct Laying: This is the most common and cost-effective method. A trench is dug, the cable is laid on a bed of sand, and then covered with another layer of sand, protective bricks, and soil. This method offers excellent heat dissipation for the cable but makes future repairs or additions difficult as it requires re-excavation. Our cable drum trailers and winches are perfectly suited for this method.

2. Draw-in System: In this method, rigid conduits or ducts are laid in the trench first, often with manholes at regular intervals. The cable is then pulled or "drawn-in" through the conduit. This approach is more expensive initially but allows for easy repair, replacement, and expansion without the need for further excavation. Our motorized cable pullers and fiberglass conduit rods are designed specifically for this system.

3. Solid System: The cable is laid in a trough made of wood, cast iron, or concrete, and the trough is then filled with a bitumen or asphaltic compound. This method offers excellent mechanical protection for the cable but is the most expensive and has poor heat dissipation, limiting the cable's current carrying capacity.