While underground lines are more resilient to external factors, their lifespan can be shorter than overhead lines due to the constant stress from heat and moisture. underground cables typically have a service life of 20 to 40 years, while overhead lines can last 30 to 50 years. This difference is primarily due to:

• Heat Dissipation: Underground lines cannot dissipate heat as efficiently as overhead lines, which are cooled by the open air. This heat can slowly degrade the cable's insulation over time.

• Moisture Ingress: Even with advanced insulation, prolonged exposure to moisture and soil conditions can degrade the cable jacket.

However, a professional installation using high-quality materials and our specialized equipment—such as hydraulic cable pullers with tension monitors to prevent damage—can significantly extend the cable's service life and prevent premature failure.