LOCATION: where the lighting system is prone to the effects of direct lightning strikes
Where the height of the lighting column exceeds that of the surrounding buildings the luminaire is, in effect, situated in lightning protection zone LPZ0A, where the risk of direct lightning strike (S1) is present. Similarly, if the Lighting Column is outside the protective area afforded by a building’s Lightning Protection System, the luminaire is effectively in zone LPZ0A. In both cases the application of Surge Protection Devices are recommended.
Lighting at sports stadiums requires a higher Lightning Protection Level (LPL) to be considered, in addition to the installation of lightning conductors.
Street lighting in urban locations may be considered to be of Lightning Protection Levels III or IV, where the maximum current per mode on a three-phase system would be 12.5kA.