The National Fire Alarm and Signaling Code (NFPA 72) is the electrical code that specifies wiring methods and cables for fire alarm systems. This code is published by the National Fire Protection Association (NFPA), an international nonprofit organization that provides guidance on fire safety. NFPA 72 covers the design, installation, maintenance, and testing of fire alarm systems, as well as the signaling devices that are used to alert building occupants and emergency responders to the presence of a fire. It is intended to ensure that fire alarm systems are reliable and effective in detecting and alerting people to fires, and in helping to prevent fires from spreading.