Lightning Protection

Lightning protection components are critical for safeguarding structures and equipment from the destructive effects of lightning strikes. An effective Lightning Protection System (LPS) is designed to direct the immense energy of a lightning strike safely to the ground, preventing damage to buildings, electrical systems, and occupants. LPS designs are governed by AS 1786 and equivalent international standards.

Air terminals, often called lightning rods or finials, are installed at the highest points of a structure to intercept lightning strikes. These rods provide a designated path for lightning to follow, reducing the likelihood of damage by safely channelling the strike to the downconductors.

Downconductors carry the electrical current from the air terminal to the ground. They are typically made of copper or aluminium and are designed to handle the high current of a lightning strike without excessive heating or degradation. Proper placement and installation of downconductors are essential to ensure the current is safely dissipated into the ground.

Bonding clamps are used to connect different metallic parts of a structure, ensuring all components are at the same electrical potential. This prevents dangerous differences in potential that can lead to arcing or side flashes, which can cause fires or damage to electronic equipment.

An Earth Termination System (ETS) often comprises earthing rods, or grounding electrodes, which are driven into the soil to provide a low-resistance path for lightning energy to dissipate into the earth. A well-designed earthing system is crucial for the effectiveness of the entire LPS, as poor grounding can lead to elevated risk of damage or even injury.

Together, these components form a comprehensive system that mitigates the risks associated with lightning strikes, protecting both structures and their contents from potentially catastrophic damage.