Lightning protection is governed by _____

Lightning protection systems are primarily governed by NFPA 780, which is the standard for the installation of lightning protection systems. This standard provides guidelines for the design, installation, and maintenance of grounding and lightning protection systems to ensure that structures and their occupants are safe from lightning strikes. It outlines the principles of protection, including the proper placement of air terminals, conductors, and grounding systems, to effectively minimize the risk of damage from lightning.

In contrast, NFPA 70 focuses on the National Electrical Code, which primarily provides regulations for electrical wiring and installations to ensure safe and reliable electrical systems. IFC 2021 refers to the International Fire Code, which encompasses a broader range of fire safety regulations and does not specifically address lightning protection. NFPA 13 deals with the installation of sprinkler systems, which is unrelated to lightning protection. Therefore, NFPA 780 is the appropriate reference for matters related to lightning protection.