Insulation failure is a primary cause of underground cable faults. While our manufacturing process ensures the highest quality, improper installation and external factors can still lead to problems. The most common causes include:

• Moisture Ingress: This is the most significant threat. If moisture enters the cable through a damaged sheath, a faulty joint, or a termination, it can lead to water treeing, which progressively degrades the insulation and causes a breakdown.

• Mechanical Damage: Improper installation, such as exceeding the minimum bending radius or applying too much tension during a pull, can create micro-fractures in the insulation. External damage from a third-party excavation is also a major cause of failure. Our professional-grade hydraulic pullers with tension monitors are specifically designed to prevent this.

• Thermal Overloading: Operating a cable beyond its rated capacity or without adequate heat dissipation can cause the insulation to overheat and degrade over time, shortening its lifespan.

• Poor Splicing and Terminations: The weakest points in any underground system are the joints and terminations. If they are not properly sealed and installed, they become a point of moisture entry and electrical stress, leading to failure.