What is the function of ground terminals in a lightning protection system?

In a lightning protection system, the primary function of ground terminals is to provide a pathway for lightning currents to safely dissipate into the earth. Ground terminals act as a critical link between the lightning protection system and the ground, ensuring that any electrical surge generated by a lightning strike can be effectively handled. This dissipation minimizes the risk of damage to structures and equipment, as well as reducing the chance of injury to people.

While bonding metal objects, intercepting lightning strokes, and interconnecting air terminals are also important aspects of lightning protection systems, these functions do not specifically describe the role of ground terminals. Bonding helps to reduce the potential difference between metal structures, intercepting lightning strokes refers to the action of air terminals attracting lightning, and interconnecting air terminals involves linking multiple air terminals together for increased effectiveness. However, the unique role of ground terminals in extending parts of the system into the earth is essential for ensuring that electrical currents have a reliable and direct path to the ground.