Transfer impedance, due to loss of skin effect attenuation or shielding, can radiate interference and noise into power and signal lines. 3.3 Behavior of Lightning. Absolute protection from lightning may exist in a thick-walled and fully enclosed Faraday Cage, however this is impractical in most cases. Important new information about lightning may affect sensitive facilities. The old recommended safe distance from the previous flash was 1-3 miles.
Lightning is a capricious, random, stochastic and unpredictable event.
Mitigation of lightning consequences can be achieved by the use of a detailed systems approach, described below in general terms. 4.1 Air Terminals . Since Franklin's day lightning rods have been installed upon ordinary structures as sacrificial attachment points, intending to conduct direct flashes to earth. In 1876 JC Maxwell proposed that Franklin rods on buildings attracted a greater number of flashes than their absence. Such rods should not be located on explosives storage structures.