A NAC cut should not produce any sparks. But bear in mind that these are live wires and that an alert could sound at any time. Even if I knew what voltage and current an enabled NAC provided, I would never advise working on one.
The American Wire Gauge (AWG) fire alarm cable comes in sizes ranging from 18 to 12 AWG (the smaller the number, the larger the wire diameter). Whether or not each detector or notification device in the circuit receives adequate voltage to function determines how much wire is required for the task.
From 18 AWG to 12 AWGThe American Wire Gauge (AWG) fire alarm cable comes in sizes ranging from 18 to 12 AWG (the smaller the number, the larger the wire diameter). Whether or not each detector or notification device in the circuit receives adequate voltage to function determines how much wire is required for the task.
An electrical cable with many conductors is used for fire alarms. Because of the PVC, plenum, shielded, and unshielded versions, this cable can be used in at least four different kinds of applications.
REDCable specifications for installing a fire alarm systemAlthough different colors are acceptable as long as they are consistent throughout the building and do not conflict with any other electrical services, the cable's outer wrapping should ideally be red.
High-rise buildings, business complexes, schools, hospitals, and other educational institutions use cables to link to security systems such as smoke detectors, emergency lighting, exit signs, and fire command centers. Where fire safety is paramount, the e-cables are utilized.
Circuits for fire alarms1. The NEC does not require red fire alarm raceways or fittings, despite the fact that some do. Make sure you locate the fire alarm circuits at terminal and junction locations [760.30].
Two to six conductors are available for fire alarm cables, and they are all typically rated for up to 300 VRMS. The type of device and the system (conventional, addressable, or hybrid) determine how many conductors are needed.
Running a 2-conductor wire, such as 14/2, from the breaker panel to the first smoke detector and then a 3-conductor cable from each detector to the next is a typical fire alarm wiring design for smoke detectors. In the event that a smoke detector is triggered, the third wire is used to trip each detector.
REDCable specifications for installing a fire alarm systemAlthough different colors are acceptable as long as they are consistent throughout the building and do not conflict with any other electrical services, the cable's outer wrapping should ideally be red.