What is the height of a horn strobe?
The wall mounting of visible signals is required to have the lens of the strobe mounted not less than 80 inches and not greater than 96 inches above the finished floor. Guidance also is given where a ceiling is too low to permit the required installation height at the minimum of 80 inches.
What is a strobe light used for?
Strobe lights are used in scientific and industrial applications, and are often used for aircraft anti-collision lighting both on aircraft themselves and also on tall stationary objects, such as television and radio towers.
Do fire alarm strobes need to be in sync?
In a corridor, “when more than 2 visible notification devices are in any field of view, they shall flash in synchronization.” So technically, if just two strobes are in the overall field of view (including non-direct viewing), they don’t need to be synchronized to meet NFPA 72 requirements.
Are strobes required in stairwells?
Are strobes required in stairwells? As with horns, NFPA 72 does not require strobes to be installed; the applicable building, fire or life safety code does. NFPA 72 provides requirements for mounting heights, brightness, location and synchronization.
Can you use stranded wire for fire alarm?
Fire Alarm Cable is for use on fire alarms, smoke detectors, burglar alarms, voice communications, power limited circuit cable, critical circuit controls, signaling and indoor non-conduit per NEC. Fire Alarm can also be shielded with aluminum foil and a stranded tinned copper drain wire.
What does NAC mean fire alarm?
Notification Appliance Circuit
A: Each NAC (Notification Appliance Circuit) in a fire alarm panel or booster power supply has a maximum current rating. This information can be found in the manuals provided with the panels. The total current draw for all the devices connected to the circuit cannot exceed the NAC rating.