What devices are placed in structures to allow occupants to manually initiate the fire signaling system quizlet?
–manual pull stations or pull boxes, are placed in structures to allow occupants to manually initiate the fire signaling system.
What devices allow occupants to manually initiate the fire signaling system?
Fire alarm initiating devices include smoke detectors, sprinkler water flow switches, manual pull stations, and more.
What are initiating devices in fire system?
Initiating devices detect a fire emergency and communicate it to the fire alarm control panel. These can be triggered both manually (pull stations), as well as automatically in a response to heat, smoke or flame. When one of these initiating devices is triggered, the control panel will go into an alarm state.
What are the most commonly used devices in a fire system?
Smoke Detectors linked to Automatic Fire Alarm Systems are available in several types, including the most common: Ionization Detectors and Photoelectric Detectors.
What is the difference between NFPA 70 and NFPA 72?
NFPA 70®, National Electrical Code®, NEC® covers wiring of a fire alarm system, but does not cover performance of a fire alarm system. NFPA 72, National Fire Alarm and Signaling Code covers the requirements for installation performance of fire alarm systems.
What is the difference between a 2 wire smoke detector and a 4 wire detector?
Differences. The key differences between two and four-wire systems are the numbers of wires and how the wiring is connected to the control panel to trigger the alarm. A four-wire system has separate wires, while a two-wire system uses the same wires to power the unit and to trigger the alarm.
What is a Call Point fire?
A manual call point is a device which enables personnel to raise an alarm in the event of a fire incident by pressing a frangible element to activate the alarm system. A fire alarm call point should be installed at a height of 1.4m above floor level at easily accessible and conspicuous positions.