NFPA 780:2020

Chapter 1 Administration
1.1 Scope.
1.2 Purpose.
1.3 Listed, Labeled, or Approved Components.
1.4 Retroactivity.
1.5 Mechanical Execution of Work.
1.6 Maintenance.
1.7 Periodic Inspection.
1.8 Units of Measurement.
Chapter 2 Referenced Publications
2.1 General.
2.2 NFPA Publications.
2.3 Other Publications.
2.4 References for Extracts in Mandatory Sections.
Chapter 3 Definitions
3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.
Chapter 4 General Requirements
4.1 General.
4.2 Materials.
4.3 Corrosion Protection.
4.4 Mechanical Damage or Displacement.
4.5 Use of Aluminum.
4.6 Strike Termination Devices.
4.7 Strike Termination Devices on Roofs.
4.8 Zones of Protection.
4.9 Conductors.
4.10 Conductor Fasteners.
4.11 Masonry Anchors.
4.12 Connector Fittings.
4.13 Grounding Electrodes.
4.14 Common Bonding of Grounded Systems.
4.15 Potential Equalization.
4.16 Bonding of Metal Bodies.
4.17 Metal Antenna Masts and Supports.
4.18 Concealed Systems.
4.19 Structural Metallic Systems.
4.20 Surge Protection.
Chapter 5 Protection for Miscellaneous Structures and Special Occupancies
5.1 General.
5.2 Masts, Spires, Flagpoles.
5.3 Facilities That Handle or Process Combustible or Explosive Dust.
5.4 Metal Towers and Tanks.
5.5 Air-Inflated Structures.
5.6 Concrete Tanks and Silos.
5.7 Guyed Structures.
5.8 Roof Top Helipads.
5.9 Fabric Structures.
Chapter 6 Protection for Heavy-Duty Stacks
6.1 General.
6.2 Materials.
6.3 Strike Termination Devices.
6.4 Conductors.
6.5 Fasteners.
6.6 Splices.
6.7 Reinforced Concrete Stacks.
6.8 Bonding of Metal Bodies.
6.9 Grounding.
6.10 Metal Stacks.
6.11 Metal Guy Wires and Cables.
Chapter 7 Protection for Structures Containing Flammable Vapors, Flammable Gases, or Liquids That Can Give Off Flammable Vapors
7.1 Applicability.
7.2 Principles of Protection.
7.3 Protective Measures.
7.4 Protection of Specific Classes of Structures.
Chapter 8 Protection of Structures Housing Explosive Materials
8.1 Application.
8.2 General.
8.3 Types of Lightning Protection.
8.4 Grounding.
8.5 Bonding.
8.6 Surge Protection.
8.7 Protection for Specific Facilities.
8.8 Metallic Fences.
8.9 Maintenance and Inspection Plan.
8.10 Inspection, Testing, and Maintenance.
Chapter 9 Protection for Wind Turbines
9.1 General.
9.2 Fundamental Principles of Protection.
9.3 Protection of Electrical and Mechanical Control Systems.
9.4 Grounding.
Chapter 10 Protection for Watercraft
10.1 General.
10.2 Materials.
10.3 Strike Termination.
10.4 Conductors.
10.5 Grounding.
Chapter 11 Protection for Airfield Lighting Circuits
11.1 General.
11.2 Application.
11.3 Purpose.
11.4 Airfield Lighting Counterpoise System.
Chapter 12 Protection for Solar Arrays
12.1 General.
12.2 Fundamental Principles of Protection.
12.3 Strike Termination Devices.
12.4 Protection of Electrical and Mechanical Systems.
12.5 Grounding.
Annex A Explanatory Material
Annex B Principles of Lightning Protection
Annex C Explanation of Bonding Principles
Annex D Inspection and Maintenance of Lightning Protection Systems
Annex E Ground Measurement Techniques
Annex F Protection for Trees
Annex G Protection for Picnic Grounds, Playgrounds, Ball Parks, and Other Open Places
Annex H Protection for Livestock in Fields
Annex I Protection for Parked Aircraft
Annex J Protection of Smart Structures
Annex K Guide to International Standards Dealing with the Selection of SPDs for Use on Photovoltaic (PV) Installations
Annex L Lightning Risk Assessment
Annex M Guide for Personal Safety from Lightning
Annex N Considerations for Nonmetallic Tanks Containing Flammable Vapors or Liquids that Give Off Flammable Vapors
Annex O Informational References

This document shall cover traditional lightning protection system installation requirements for the following: (1) Ordinary structures (2) Miscellaneous structures and special occupancies (3) Heavy-duty stacks (4) Structures containing flammable vapors, flammable gases, or liquids that can give off flammable vapors (5) Structures housing explosive materials (6) Wind turbines (7) Watercraft (8) Airfield lighting circuits (9) Solar arrays.