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100+ Free ID Low Voltage Practice Questions

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Free Low Voltage Contractor Practice Test by State 2026: 2,800+ Questions25 min read
2026 Statistics

Key Facts: ID Low Voltage Exam

70%

Passing Score

Idaho DBS

100 Q

Practice Questions

OpenExamPrep

Specialty

License Type

Idaho DBS

DBS

Licensing Agency

Idaho DBS

Idaho requires a Specialty Electrical Contractor or Specialty Journeyman license for low voltage work, administered by the Division of Building Safety. The exam covers NEC codes, fire alarm, security, cabling, and state regulations.

Sample ID Low Voltage Practice Questions

Try these sample questions to test your ID Low Voltage exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which Idaho state agency oversees low voltage electrical contractor licensing?
A.Idaho Department of Labor
B.Idaho Division of Building Safety
C.Idaho Department of Health and Welfare
D.Idaho Bureau of Occupational Licenses
Explanation: The Idaho Division of Building Safety (DBS) oversees electrical contractor licensing in the state, including low voltage specialty contractors. The DBS administers examinations, issues licenses, and enforces electrical code compliance.
2What type of license does Idaho issue for low voltage electrical work?
A.General Electrician license
B.Specialty Electrical Contractor / Specialty Journeyman license
C.Master Electrician license only
D.No license is required for low voltage work
Explanation: Idaho issues Specialty Electrical Contractor and Specialty Journeyman licenses for low voltage work. These licenses authorize installation of fire alarm, security, telecommunications, and other low voltage systems.
3According to NEC Article 725, what distinguishes a Class 2 circuit from a Class 3 circuit?
A.Class 2 is for outdoor use only
B.Class 2 has lower voltage and power limits than Class 3
C.Class 3 is only for fire alarm systems
D.There is no difference between Class 2 and Class 3
Explanation: Class 2 circuits have more restrictive voltage and power limits than Class 3 circuits. Class 2 is limited to 42.4V peak and 100 VA, while Class 3 allows up to 100V. Both provide safety from fire and shock but at different levels.
4What NEC article covers the installation of fire alarm systems?
A.Article 725
B.Article 760
C.Article 800
D.Article 770
Explanation: NEC Article 760 covers fire alarm system installation, including power-limited fire alarm (PLFA) and non-power-limited fire alarm (NPLFA) circuits. It specifies wiring methods, cable types, and installation requirements specific to fire alarm systems.
5In Idaho, what experience is typically required for a Specialty Journeyman Electrician license?
A.No experience required
B.2,000 hours of specialty electrical experience
C.4 years as a general electrician
D.A college degree in electrical engineering
Explanation: Idaho requires approximately 2,000 hours of documented specialty electrical experience to qualify for the Specialty Journeyman Electrician examination. This experience must be in the specific specialty area under a licensed contractor's supervision.
6What is the maximum horizontal cable run distance per TIA-568 standards?
A.50 meters
B.90 meters
C.100 meters
D.300 meters
Explanation: TIA-568 limits horizontal cable runs to 90 meters from the telecommunications room to the work area outlet. The total channel, including equipment cords and patch cables, is limited to 100 meters.
7Which cable type must be used in a plenum airspace for fire alarm circuits?
A.FPL
B.FPLP
C.FPLR
D.CM
Explanation: FPLP (Fire Power-Limited Plenum) cable is required for fire alarm circuits installed in plenum airspaces. The plenum rating ensures the cable meets fire spread and smoke generation limits in air-handling spaces.
8What is the standard battery backup requirement for fire alarm systems per NFPA 72?
A.4 hours standby
B.24 hours standby followed by 5 minutes of alarm
C.48 hours standby
D.72 hours standby
Explanation: NFPA 72 requires secondary power (batteries) to operate the fire alarm system in standby mode for 24 hours, followed by 5 minutes of alarm operation. This ensures the system functions during extended power outages.
9What does NEC Article 800 regulate?
A.Fire alarm circuits
B.Emergency power systems
C.Communications circuits
D.Motor control circuits
Explanation: NEC Article 800 covers communications circuits including telephone, data, and broadband systems. It addresses installation requirements, grounding, cable types, and required separation from power conductors.
10What is the primary function of an end-of-line resistor in a fire alarm circuit?
A.To boost signal strength
B.To supervise the circuit for wiring faults
C.To regulate voltage to devices
D.To filter electrical noise
Explanation: An end-of-line resistor (EOLR) enables the fire alarm control panel to continuously monitor the circuit for opens and grounds. Any change from the expected resistance value triggers a trouble condition on the panel.

About the ID Low Voltage Exam

The Idaho low voltage contractor exam tests knowledge of NEC Articles 725, 760, 770, and 800, fire alarm systems, security installations, structured cabling, and Idaho-specific licensing requirements. Candidates must qualify as a Specialty Electrical Contractor or Specialty Journeyman through the Division of Building Safety.

Questions

100 scored questions

Time Limit

2 hours

Passing Score

70%

Exam Fee

Varies (Idaho Division of Building Safety)

ID Low Voltage Exam Content Outline

25%

NEC Codes & Standards

NEC Articles 725, 760, 770, 800; cable ratings; wiring methods; conduit fill

25%

Fire Alarm Systems

NFPA 72, initiating devices, notification appliances, FACP, circuit classes, testing

20%

Security & Access Control

Intrusion detection, IP cameras, access control, motion detectors, NVR systems

15%

Structured Cabling & Telecom

TIA-568, Cat 6/6a, fiber optic, PoE, patch panels, certification testing

15%

Idaho Regulations & Safety

DBS licensing, permits, inspections, OSHA safety, firestopping

How to Pass the ID Low Voltage Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 100 questions
  • Time limit: 2 hours
  • Exam fee: Varies

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

ID Low Voltage Study Tips from Top Performers

1Master NEC Articles 725, 760, 770, and 800 for low voltage circuit classifications and wiring methods
2Study NFPA 72 fire alarm system installation, testing, and maintenance requirements
3Review Idaho Division of Building Safety licensing requirements and inspection processes
4Practice TIA-568 structured cabling standards and cable certification testing parameters
5Understand PoE standards (802.3af/at/bt) and security system design fundamentals

Frequently Asked Questions

What license do I need for low voltage work in Idaho?

Idaho requires a Specialty Electrical Contractor or Specialty Journeyman license from the Division of Building Safety for low voltage work including fire alarm, security, and telecom installations.

What experience is required for Idaho specialty licensing?

Idaho typically requires approximately 2,000 hours of documented specialty electrical experience under a licensed contractor's supervision to qualify for the examination.

What score do I need to pass?

You need a minimum of 70% to pass the Idaho low voltage contractor exam.

Who administers the Idaho low voltage exam?

The Idaho Division of Building Safety administers licensing exams, issues licenses, and enforces electrical code compliance throughout the state.