The most common methods for installing 132kV underground cables are direct burial, laying in ducts or conduits, and laying in trenches. The selection of the method is a critical decision that depends on several factors, including:

• Location: Densely populated urban areas often require duct-laying to minimize disruption and allow for future maintenance without re-excavation. In contrast, direct burial is a cost-effective option for open areas.

• Soil Conditions: Direct burial is suitable for stable soil, while rocky or unstable ground may necessitate trenches or ducts.

• Environmental Impact: Trenchless methods like Horizontal Directional Drilling (HDD) are increasingly used to cross rivers, roads, or other obstacles to reduce environmental disturbance.

• Maintenance Requirements: Laying cables in ducts or troughs allows for easier repair, inspection, and future expansion.