Quick Answer
Install air terminals on a cabin at the highest point (at least 3 meters or 10 feet above the roof) to maximize lightning strike protection, ideally on the north side to minimize snow accumulation and ensure clear air flow. Avoid installing air terminals near power lines or other conductive objects.
Choosing the Right Location
When selecting the location for air terminals on a cabin, consider the roof’s geometry and the surrounding environment. Typically, the highest point of the roof is the most suitable location for air terminals, ideally at least 3 meters (10 feet) above the roof to ensure clear air flow and maximize protection. A north-facing location is recommended to minimize snow accumulation and reduce the risk of damage to the air terminal.
Considerations for Multiple Terminals
For cabins with complex roof geometries or multiple interconnected structures, consider installing multiple air terminals to ensure comprehensive lightning protection. Each terminal should be installed at the highest point of its respective structure, following the same guidelines as for single terminals. Ensure a minimum spacing of 10 meters (33 feet) between terminals to prevent electrical discharges between them.
Installation Techniques and Safety
When installing air terminals, follow strict safety protocols to prevent electrical shock or injury. Ensure all personnel are trained in lightning protection and use personal protective equipment (PPE) when working with electrical conductors. Use a grounding rod to connect the air terminal to the cabin’s grounding system, and ensure a minimum of 1 meter (3 feet) of clearance between the rod and any conductive objects. Regularly inspect and maintain air terminals to ensure they remain effective and secure.
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