What are the primary advantages and disadvantages of underground cables compared to overhead lines?

2025-08-11

Answer: The choice between underground cables and overhead lines is a key consideration in power line projects, with each having distinct pros and cons.

underground Cables:

  • Advantages: Higher reliability in severe weather (wind, ice storms), better aesthetics with no visual clutter, and reduced public safety risks from accidental contact.

  • Disadvantages: Significantly higher installation cost (often 4-14 times more expensive), more difficult and time-consuming to locate and repair faults, and lower current-carrying capacity (ampacity) due to heat dissipation challenges.

overhead lines:

  • Advantages: Lower initial cost, faster and easier installation and maintenance, and simple fault location.

  • Disadvantages: Vulnerable to damage from weather and external factors (e.g., trees), can be an eyesore, and require a larger right-of-way easement for safety.

We provide a comprehensive range of equipment for both overhead and underground projects, allowing our clients to select the most suitable solution for their specific environment and budget.

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