What document provides the requirements for surge protection systems in electrical and communication systems?

The correct choice focuses on NFPA 780, which specifically addresses the requirements for lightning protection systems. This document is essential because it outlines the standards and practices for mitigating the risks associated with lightning strikes, including the installation of surge protection systems.

While IEEE 1100 (the Emerald Book) deals with power quality and has relevant information on the interactions of electrical systems, it does not solely focus on surge protection systems. UL 1449 establishes safety standards for surge protective devices but is not the primary reference for comprehensive system requirements that also consider the entirety of surge protection in the context of lightning protection. ANSI C62.41 provides guidelines on surge voltages in low-voltage AC power circuits but lacks the broader scope found in NFPA 780 for lightning protection systems.

Thus, NFPA 780 serves as the foundation for ensuring that electrical and communication systems are properly equipped to handle the surge phenomena associated with lightning, clearly establishing the overarching requirements needed for effective safety measures.