Lightning protection system is an assembly of equipment and conductors designed to protect a building from the effects of lightning by safely conducting lightning current into the ground. It consists of lightning arrestors (interceptors), discharge wires and a grounding conductor that dissipates energy into the ground. In modular and frame houses, the lightning protection system plays a particularly important role due to the presence of flammable materials and lightweight construction.
The system must be designed in accordance with current regulations and adapted to the local lightning risk zone. Lightning protection components are mainly installed on the roof and façade (other solutions are also used in exceptional cases). Their effectiveness depends on correct earthing and consistency of connections. A correctly executed installation minimises the risk of fire, structural damage and failure of electrical equipment. It also minimises risks to the life and health of building occupants. In practice, installers often integrate it with the equalisation installation and surge protection inside the building. This installation is sometimes required in timber-framed house projects, especially in areas with a higher risk of storms.
