Protect against hazards arising from lightning exposure!
Updated to reflect the latest industry developments and safety practices, the 2004 NFPA 780: Installation of Lightning Protection Systems helps you maximize the benefits of various types of protection methods and devices.
Technical changes to this edition include:
A main conductor, solid strip, was added for Class II material requirements for ordinary structures exceeding 75 ft. in height
Taller air terminals can be used to increase the spacing on flat or gently sloping roofs;
Handrails may be used as a substitute for down conductors
Additional separation between ground rods is required where multiple ground rods are used
Additional guidance is provided for those instances in which it is necessary to install the grounding conductor directly on bedrock;
The section entitled "Surge Suppression" was entirely rewritten;
Titanium strike termination devices may now be used
The section entitled "Faraday Cage" was replaced with "Metallic Cage"