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LPS standards for design, products, installation and inspection

There are four documents that establish standards for LPS in the U.S. They are:
  • The National Fire Protection Association (NFPA) Document 780, "Standard for the Installation of Lightning Protection Systems." NFPA 780 is the primary standard for LPS and addresses systems for typical buildings, protection of specialty occupancies and constructions (some examples include air-inflated structures, hazardous materials storage, watercraft, wind turbines), and the protection of solar arrays. Although not part of the official requirements, NFPA 780 Annex D is included for informational purposes and covers inspection and maintenance of LPS.

  • UL Standard 96, "Lightning Protection Components." UL 96 provides minimum requirements for the construction of air terminals, cable conductors, fittings, connectors and fasteners used with LPS. UL 96 is the only material standard for LPS components.

  • UL Standard 96A, "Installation Requirements for Lightning Protection Systems." UL 96A is based on the general requirements of NFPA 780 but has some differences in inspection criteria.

  • LPI-175, "Standard of Practice for the Design, Installation and Inspection of Lightning Protection Systems." LPI-175 is not intended to be an enforceable document; it is based on NFPA 780 and it contains additional explanatory material intended to help installers and inspectors.
LPS should use components tested and labeled in accordance with UL 96. Installations should comply with the requirements of NFPA 780 or UL 96A.



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