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Insulated Lightning Down Lead Cable

An Insulated Lightning Down Lead Cable is a specially designed high-voltage conductor used to safely carry lightning current from air terminals to the grounding system while maintaining electrical separation from the structure.



Insulated Lightning Down Lead Cable is used in advanced lightning protection systems where maintaining a separation distance between the lightning conductor and building components is required. The insulated design helps reduce the risk of side flashes, electromagnetic interference, and accidental contact with nearby conductive materials.

These cables typically use a high-conductivity copper conductor with a high-voltage insulation layer and protective outer sheath, making them suitable for modern buildings, sensitive equipment areas, and architectural structures.

Key Features

  • High lightning current carrying capacity
  • Electrically insulated construction
  • Reduces side-flash risk
  • UV and weather resistant
  • Corrosion-resistant conductor
  • Suitable for concealed installations
  • Flexible and easy routing
  • Long service life

Common Applications

  • High-Rise Buildings
  • Data Centers
  • Communication Facilities
  • Solar PV Systems
  • Industrial Plants
  • Hospitals
  • Sensitive Electronic Facilities

Typical Specifications

  • Conductor: Copper
  • Insulation: High-voltage polymer insulation
  • Voltage Rating: Model dependent
  • Cross Section: 35–120 mm² (typical)
  • Installation: External or concealed routing
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Insulated Lightning Down Lead Cable

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