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Key Facts: Idaho Low Voltage Practice Exam
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Official Credential
Idaho Division of Building Safety
Not one total
Official Exam Format
Credential-specific bulletin required
100 Q
Practice Questions
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Idaho does not publish one generic “low voltage contractor” exam matching this route. Use the 100 local questions for diagnostic practice, then confirm the exact credential, legal scope, official item count, time limit, passing standard, fee, and reference list with the responsible authority.
Sample Idaho Low Voltage Practice Practice Questions
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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 Idaho Low Voltage Practice Practice Questions
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