Causes of cable insulation damage in distribution box
Causes: Overloading, high ambient temperatures (>30°C), or poor heat dissipation in bundled or buried cables. Damaged or defective insulation refers to the deterioration or failure of the insulating material used in an electrical system. The electrical properties of concern for cable insulations are dielectric loss properties (resistivity, insulation resistance, dielectric constant and permittivity) and dielectric endurance properties (dielectric strength, breakdown strength, and ability to withstand corona attack).
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