Fire Alarm

[laketime]

Does the NEC require fire alarm cabling to be in conduit in a commercial building?

 

[Buck Parrish]

Does the NEC require fire alarm cabling to be in conduit in a commercial building?

For the most part, No,
Your building specs. might, though. Or city ordinances.

 

[raider1]

Take a look at Article 760 for fire alarm requirements.

Chris

 

[peter d]

Many local codes are more stringent than the NEC with regard to fire alarm wiring. In my area, all fire alarm wiring has to be in metal raceway and/or MC cable.

Only your local authority can answer this question.

 

[DM2-Inc]

Also consider what the system is being used for. If the system is being used for a Fire Suppression system in accordance with NFPA 2001 (2008 edition, and earlier), section 4.3 makes the following statements:

4.3.1.1 Detection, actuation, alarm, and control systems shall be installed, tested, and maintained in accordance with appropriate NFPA protective signaling systems standards. (See NFPA 70 and NFPA 72. In Canada refer to ULC S524-M91 and ULC S529-M87.)

4.3.1.3 Initiating and releasing circuits shall be installed in raceways. Other than as permitted in 4.3.1.3.1, alternating current (ac) and direct current (dc) wiring shall not be combined in a common conduit or raceway.

4.3.1.3.1 Ac and dc wiring shall be permitted to be combined in a common conduit or raceway where shielded and grounded.​