Grounding requirements to assure people and equipment safety against lightning

In places of high lightning activity, as it is the case of Florida, in the US, and Amazonia, in Brazil, lightning is an important hazard, for people and equipment, specially in installations with high antennas and radar towers, and for electronic equipment. To obtain safety, one essential aspect is to adopt adequate grounding systems, with the eventual need of additional measures, such as shielding and overvoltage limiting equipment, and masts and shielding cables, to limit current amplitude of lightning strikes incident in protected zones. We present the most important methodologies and procedures, that allow us to consider such aspects in a coordinated and practical way. The examples are related to concrete projects.