Protection level : II as defined in NF C 17-100 Description : 6m high lightning rods installed on the roof.
Protection radius Rp = 12 metres at level II protection.
On the roof: equipotential interconnection of the lightning rods.
On the walls: each lightning rod is connected to a down conductor fitted with a
dedicated earth rod.
Protection level : II as defined in NF C 17-100 Description :
50 cm capture points
installed around the roof perimeter every 15 metres and on the lift cage.
10 metre roof mesh grid.
On the walls: down conductors every 15 metres, the bottoms of which are connected to a series of
dedidated earth rods..
Installation schematic :
Protection level : II as defined in NF C 17-102 Description : 5m high early streamer emission lightning
conductor on the roof of the lift cage.
Protection radius Rp = 83.5 metres (Δt = 47μs minimum) at level II protection.
The lightning conductor is connected to two down conductors (see NF C 17-102 § 2.3.2), each fitted with a
dedicated earth rod..
