About Fire alarm system, electric, installation

Article 760 tells us how to install wiring and equipment for fire alarm systems, including all circuits these devices control and provide power to. What it doesn't tell us is when a fire alarm system is required to be installed in the first place or where to place the alarm equipment, such as pull stations or horn/strobe units. For installation information, consult the locally adopted building code or NFPA 101, Life Safety Code. For placement of such equipment, turn to NFPA 72, National Fire Alarm Code.

As defined in NFPA 72, residential smoke alarm systems (including interconnecting wiring) are not powered by a fire alarm system. Therefore, Art. 760 does not cover them. Fire alarm systems include fire detection and alarm notification, voice communications, guard's tour, sprinkler water flow, and sprinkler supervisory systems [760.1 FPN 1].

Chapter 3 in reverse. When applying most Articles in Chapters 5 through 8, Chapter 3 wiring methods apply except as noted. When applying Art. 760, Chapter 3 wiring methods do not apply, except as noted. You'll find the Chapter 3 references, as well as some other Article references, in 760.3.

One of the requirements is, naturally, that of firestopping. Openings in fire-resistant walls, floors, and ceilings must be sealed to minimize the possible spread of fire or products of combustion [300.21].


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All contents of this page are taken from http://ecmweb.com/nec/code-basics/electric_fire_alarm_system_3/