Class D Electrical License Flashcards
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Questions and Answers

What is Chapter 1 in NFPA 72?

Administration

What is Chapter 2 in NFPA 72?

Referenced Publications

What is Chapter 3 in NFPA 72?

Definitions

What are Chapters 4, 5 and 6 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 7 in NFPA 72?

<p>Documentation</p> Signup and view all the answers

What are Chapters 8 and 9 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 10 in NFPA 72?

<p>Fundamentals</p> Signup and view all the answers

What is Chapter 11 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 12 in NFPA 72?

<p>Circuits and Pathways</p> Signup and view all the answers

What is Chapter 13 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 14 in NFPA 72?

<p>Inspection, Testing, and Maintenance</p> Signup and view all the answers

What are Chapters 15 and 16 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 17 in NFPA 72?

<p>Initiating Devices</p> Signup and view all the answers

What is Chapter 18 in NFPA 72?

<p>Notification Appliances</p> Signup and view all the answers

What are Chapters 19 and 20 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 21 in NFPA 72?

<p>Emergency Control Function Interfaces</p> Signup and view all the answers

What is Chapter 22 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 23 in NFPA 72?

<p>Protected Premises Fire Alarm Systems</p> Signup and view all the answers

What is Chapter 24 in NFPA 72?

<p>Emergency Communications Systems (ECS)</p> Signup and view all the answers

What is Chapter 25 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 26 in NFPA 72?

<p>Supervising Station Alarm Systems</p> Signup and view all the answers

What is Chapter 27 in NFPA 72?

<p>Public Emergency Alarm Reporting Systems</p> Signup and view all the answers

What is Chapter 28 in NFPA 72?

<p>Reserved</p> Signup and view all the answers

What is Chapter 29 in NFPA 72?

<p>Single- and Multiple-Station Alarms and Household Fire Alarm Systems</p> Signup and view all the answers

Article 760 of NFPA 70 Provides requirements of _________.

<p>Fire Alarm Systems</p> Signup and view all the answers

Inside a FACU, what is the minimum separation between 110V AC lines and the power limited wires?

<p>0.25&quot;</p> Signup and view all the answers

What is the standard length of E.M.T. conduit?

<p>10'</p> Signup and view all the answers

Open grounds result in a(n) _______ signal.

<p>Trouble</p> Signup and view all the answers

A manual fire alarm box (A.K.A. pull station), when actuated, will produce a(n) ____ signal.

<p>Alarm</p> Signup and view all the answers

Upon detection of a trouble condition, fire alarm system controls must initiate a trouble signal within ___ seconds.

<p>200</p> Signup and view all the answers

Secondary power supplies must supply power to an in-building fire emergency voice/alarm communications fire alarm system for a minimum of _____.

<p>24 hours of standby followed by 15 Minutes of alarm</p> Signup and view all the answers

Waterflow switches are permitted to have a time delay, or retard, up to __.

<p>90 seconds</p> Signup and view all the answers

For a fixed temperature heat detector, the temperature rating of the detector shall be:

<p>At least 20° F above the maximum ambient temperature</p> Signup and view all the answers

Guards for mechanical protection of notification appliances are required:

<p>Where the appliances are subject to mechanical damage</p> Signup and view all the answers

The maximum travel distance on the same floor to reach a manual fire alarm box is:

<p>200 ft</p> Signup and view all the answers

The minimum voltage rating of a power limited Fire Alarm cable is ___.

<p>300 volts</p> Signup and view all the answers

Alarm notification appliances must be tested:

<p>Annually</p> Signup and view all the answers

The required location for a wall-mounted audible notification appliance in a building is:

<p>Not less than 90 in. above the finished floor and 6 in. below the ceiling (measured to the top of the appliance) or At any location provided the sound levels are met</p> Signup and view all the answers

Study Notes

NFPA 72 Overview

  • Chapter 1: Administration, outlines management and operational procedures.
  • Chapter 2: Referenced Publications, lists sources that are acknowledged in the standard.
  • Chapter 3: Definitions, provides clear meanings of terms used throughout NFPA 72.
  • Chapters 4, 5, 6: Reserved for future provisions or updates.
  • Chapter 7: Documentation, details requirements for record-keeping relating to fire alarm systems.
  • Chapters 8, 9: Reserved for potential future content.
  • Chapter 10: Fundamentals, establishes core principles of fire alarm systems.
  • Chapter 11: Reserved, for future needs.
  • Chapter 12: Circuits and Pathways, discusses specifications for wiring arrangements in fire alarms.
  • Chapter 13: Initiating Devices, outlines devices that activate alarm systems.
  • Chapter 14: Notification Appliances: details the various appliances that provide alerts for alarms.
  • Chapters 15, 16: Reserved for future updates or guidelines.
  • Chapter 21: Emergency Control Function Interfaces, addresses interaction between fire alarm systems and external controls.
  • Chapter 23: Protected Premises Fire Alarm Systems, explains systems designed for specific buildings.
  • Chapter 24: Emergency Communications Systems (ECS), describes systems for messaging in emergencies.
  • Chapters 25: Reserved, for future discussions.
  • Chapter 26: Supervising Station Alarm Systems, outlines the monitoring for alarm signals.
  • Chapter 27: Public Emergency Alarm Reporting Systems, specifies systems for reporting alarms to authorities.
  • Chapter 29: Single- and Multiple-Station Alarms and Household Fire Alarm Systems, addresses residential fire alarm requirements.

Fire Alarm Systems Requirements

  • Article 760 of NFPA 70 specifies requirements for Fire Alarm Systems.
  • Minimum separation inside FACU between 110V AC lines and power-limited wires: 0.25 inches.
  • Standard length of EMT conduit used: 10 feet.

Alarm Signals and System Performance

  • Open grounds result in a trouble signal, indicating system issues.
  • Actuation of a manual fire alarm box generates an alarm signal.
  • Fire alarm systems must initiate a trouble signal within 200 seconds upon detecting an issue.
  • Secondary power supplies must provide standby for 24 hours followed by 15 minutes of alarm capability.

System Components and Specifications

  • Waterflow switches may have a time delay up to 90 seconds.
  • Fixed temperature heat detectors must be rated at least 20°F above the maximum ambient temperature.
  • Guards are required for notification appliances at risk of mechanical damage.
  • Maximum travel distance to a manual fire alarm box in a building is 200 feet.

Cable and Testing Regulations

  • Minimum voltage rating for power-limited fire alarm cable is 300 volts.
  • Alarm notification appliances must undergo testing annually.
  • Wall-mounted audible notification appliances should be installed 90 inches above the finished floor and 6 inches below the ceiling, while also adhering to sound level requirements.

Installation Guidelines

  • For high-ceiling spaces, proper placement of notification appliances is required to ensure effective alerting.

These notes capture the essential components of NFPA 72 regarding fire alarm systems, including the different chapters, significant articles, and performance requirements.

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Test your knowledge on NFPA 72 with these flashcards covering essential chapters. Each card provides a specific chapter and its focus, from administration to documentation. Ideal for anyone preparing for their Class D Electrical License.

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