Questions and Answers
The specific requirements for writing and equipment installation for fire protective signaling system are covered in?
NFPA 70
The code established to help fire authorities continually develop safeguards against fire hazards is?
NFPA 1
Which class of circuits are run in non-redundant paths to increase reliability?
A
A defined area within the boundaries of a fire alarm system is known as a(n)?
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A fire system with zones that allow multiple signals from several sources to be sent and received over a single communication line is known as a(n)?
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Which of the following is a type of spot detector?
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An automatic detector that draws air from the protected area back to the detector is called a(n)?
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Which of the following is a type of fixed-temperature heat detector?
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NFPA 72 prohibits a duct detector from being used as a supervisor device.
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The CO2 spike phenomenon for hydrocarbon-based fires is used in?
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Which type of pull box is restricted for use in special applications?
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A verification method used by addressable systems is?
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Fire warning system units for commercial use must be listed in accordance with?
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Primary power circuits supplying fire alarm systems must be protected by circuit breakers not larger than?
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The NFPA 72 Temporal 3 sound pattern for a fire alarm signal is?
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At 10 feet, public area audible notification devices must have a minimum rating of?
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Which of the following code-authorized signals does not require the approval of the AHJ?
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Which of the following conduits or cables cannot be buried?
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Commercial fire alarm cables that run from floor to floor must be?
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Power-limited fire alarm circuit conductors must be separated from non-power-limited fire alarm circuit conductors by at least?
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How many conductors does a Class B SLC require to reach each device on a circuit?
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An SLC that consists of a Class A main trunk with a Class B spur circuit is known as a?
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For smoke chamber definition purposes, an archway that extends down from the ceiling is considered a(n)?
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The primary function of a duct smoke detector is to?
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In a fire alarm system, a visual or audible supervisory signal must be?
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Study Notes
Fire Alarm Codes and Requirements
- NFPA 70 outlines the requirements for writing and installing fire protective signaling systems.
- NFPA 1 establishes a code for fire authorities to develop safeguards against fire hazards.
Fire Alarm Circuit Classes and Zones
- Class A circuits utilize non-redundant paths to enhance reliability.
- A "Zone" refers to a defined area within a fire alarm system.
Fire Alarm System Types
- A "Multiplex system" is a fire alarm system with zones allowing multiple signals from various sources over one communication line.
- "Air sampling detectors" automatically draw air from the protected area to the detector.
- "Thermoelectric" represents a type of spot detector.
Detectors and Signals
- A fixed-temperature heat detector example is the "fusible link."
- NFPA 72 indicates that duct detectors cannot serve as supervisor devices, which is a misconception; the statement is false.
- The CO2 spike phenomenon, relevant for hydrocarbon fires, is detected using infrared detectors.
Manual Activation and Verification Methods
- Key-operated pull boxes are specialized for certain applications.
- "Wail-and-check" is a verification method utilized by addressable systems.
Fire Alarm System Standards
- Commercial fire warning system units must adhere to UL 864 standards.
- Power circuits supplying fire alarms must use circuit breakers not exceeding 20A.
Alarm Sound Patterns and Notification Standards
- NFPA 72 defines the Temporal 3 sound pattern as three short tones followed by a pause and a repeat.
- Audible notification devices in public areas must achieve a minimum rating of 75 dBa at a distance of 10 feet.
Signal Approval and Wiring Standards
- General signals do not require approval from the Authority Having Jurisdiction (AHJ).
- Plain steel EMT conduits or cables are not suitable for burial.
- Commercial fire alarm cables traveling between floors must be rated for riser use.
Fire Alarm Circuit Specifications
- Power-limited fire alarm circuit conductors must be at least 2 inches apart from non-power-limited conductors.
- A Class B SLC requires two conductors to connect to each device within a circuit.
- A "Hybrid SLC" consists of a Class A main trunk paired with a Class B spur circuit.
Specialized Terms in Fire Alarm Systems
- An archway descending from the ceiling is defined as a "Boundary" for smoke chamber purposes.
- The main function of a duct smoke detector is to deactivate the associated HVAC system.
- Supervisory signals in a fire alarm system must differ from alarm and trouble signals.
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Description
Test your knowledge on fire alarm codes, circuit classes, and detector types. This quiz covers important standards from NFPA like NFPA 70 and NFPA 1, as well as details on fire alarm system types and their components. Perfect for those studying fire safety regulations.
