UFC 3-575-01 Lightning and Static Electricity Protection
This publication provides technical guidance and design requirements for static electricity and lightning protection systems as well as related grounding systems for facilities and other
NFPA 780, Annex B.4.3, states that properly made ground connections are essential to the effective functioning of a lightning protection system, and every effort should be made to provide ample contact with the earth.
7. Both internal and external lightning surge protection systems are mandatory. The BS EN 62305:2006 has stringent requirements for annual testing and inspection of the lightning protection systems. This of course, goes along with mandatory maintenance requirements. This is of course only a small list of differences.
Therefore the need for optimized and reliable electrical protection against the influence of lightning and surge events becomes mandatory. A risk assessment per IEC 62305-2 should first be performed to understand better if an external lightning protection system (LPS) is required.
Supplemental grounding is necessary, however, where direct grounding is not provided. Ironically, 2003 then refers the reader to NFPA 780 (see below) for more information on grounding practices for lightning protection.
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