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100+ Free NM Low Voltage Practice Questions

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What is the function of an isolation module in an addressable fire alarm system?

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

Key Facts: NM Low Voltage Exam

70%

Passing Score

NM CID

2 years

Experience Required

NM CID

2020 NEC

Code Edition

NM CID

100 Q

Practice Questions

OpenExamPrep

New Mexico CID issues ES-3 (Sound and Alarm) and ES-7 (Telephone Systems) licenses requiring trade and business/law exams, 2 years experience, and surety bonding.

Sample NM Low Voltage Practice Questions

Try these sample questions to test your NM 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 New Mexico state agency regulates low voltage contractor licensing?
A.NM Public Regulation Commission
B.NM Construction Industries Division (CID)
C.NM Department of Workforce Solutions
D.NM Energy, Minerals and Natural Resources Dept
Explanation: The New Mexico Construction Industries Division (CID) under the Regulation and Licensing Department regulates all contractor licensing in the state, including low voltage electrical specialties such as ES-3 and ES-7 classifications.
2What is the ES-3 license classification in New Mexico?
A.General Electrical Contractor
B.Sound and Alarm Systems Contractor
C.Telephone Systems Contractor
D.Plumbing Contractor
Explanation: The ES-3 classification in New Mexico covers Sound and Alarm Systems contractors. This license authorizes the installation, service, and repair of sound systems, fire alarm systems, burglar alarm systems, and similar low voltage signaling systems.
3What is the ES-7 license classification in New Mexico?
A.Sound and Alarm Systems
B.Telephone Systems Contractor
C.General Electrical
D.Fire Sprinkler Contractor
Explanation: The ES-7 classification covers Telephone Systems contractors in New Mexico. This license authorizes the installation, service, and repair of telephone systems, data cabling, and related communications infrastructure.
4Under NEC Article 725, what are the three classes of remote-control, signaling, and power-limited circuits?
A.Class A, Class B, and Class C
B.Class 1, Class 2, and Class 3
C.Type 1, Type 2, and Type 3
D.Grade 1, Grade 2, and Grade 3
Explanation: NEC Article 725 defines three classes of circuits: Class 1, Class 2, and Class 3. Each class has different voltage and power limitations that determine permissible wiring methods, cable types, and installation requirements.
5What edition of the NEC has New Mexico adopted for electrical installations?
A.2014 NEC
B.2017 NEC
C.2020 NEC
D.2023 NEC
Explanation: New Mexico has adopted the 2020 National Electrical Code (NEC/NFPA 70) for electrical installations. All low voltage contractors must comply with this edition when performing installations in the state.
6In New Mexico, what experience requirement must an applicant meet for the ES-3 license?
A.No experience required
B.1 year of experience
C.2 years of experience in sound and alarm systems
D.4 years of journeyman-level experience
Explanation: New Mexico CID requires applicants for the ES-3 (Sound and Alarm) license to demonstrate at least 2 years of experience in the installation and service of sound and alarm systems. Experience must be documented and verifiable.
7Which NEC article specifically covers fire alarm system installations?
A.Article 700
B.Article 725
C.Article 760
D.Article 800
Explanation: NEC Article 760 covers the installation of wiring and equipment for fire alarm systems, including both power-limited fire alarm (PLFA) and non-power-limited fire alarm (NPLFA) circuits. This article specifies cable types, wiring methods, and separation requirements.
8What cable type is required for power-limited fire alarm circuits in plenum spaces?
A.FPL
B.FPLR
C.FPLP
D.CM
Explanation: FPLP (Fire Power-Limited Plenum) cable is required for power-limited fire alarm circuits installed in plenum spaces. Plenum-rated cables have low smoke and flame-spread characteristics necessary for air-handling spaces per NEC Article 760.
9According to NFPA 72, what is the minimum standby battery capacity for a fire alarm system?
A.12 hours standby plus 5 minutes alarm
B.24 hours standby plus 5 minutes alarm
C.24 hours standby plus 15 minutes alarm
D.48 hours standby plus 10 minutes alarm
Explanation: NFPA 72 requires secondary power supplies to operate the fire alarm system for at least 24 hours in standby mode followed by 5 minutes of alarm operation. This ensures system functionality during extended power outages.
10What is the maximum horizontal cable run length per TIA-568 standards?
A.50 meters
B.90 meters
C.100 meters
D.150 meters
Explanation: TIA-568 limits the horizontal cable run (permanent link) to 90 meters from the telecommunications room to the work area outlet. The total channel length including patch cords at both ends cannot exceed 100 meters.

About the NM Low Voltage Exam

The New Mexico low voltage contractor exam covers ES-3 (Sound/Alarm) and ES-7 (Telephone Systems) classifications. Topics include NEC codes, fire alarm, security, telecommunications, and NM CID regulations.

Questions

100 scored questions

Time Limit

2 hours

Passing Score

70%

Exam Fee

Varies by classification (NM Construction Industries Division (CID))

NM Low Voltage Exam Content Outline

20%

NM CID Regulations

ES-3/ES-7 licensing, CID requirements, bonding, permits, enforcement

25%

NEC Codes & Standards

NEC Articles 725, 760, 770, 800, circuit classifications, cable types

20%

Systems & Technology

Fire alarm, security, access control, structured cabling, IP systems

20%

Installation Practices

Wiring methods, terminations, firestopping, cable management

15%

Safety & Testing

OSHA safety, cable certification, NFPA 72 testing, surge protection

How to Pass the NM Low Voltage Exam

What You Need to Know

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

Keys to Passing

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

NM Low Voltage Study Tips from Top Performers

1Know the difference between ES-3 (Sound/Alarm) and ES-7 (Telephone) license scopes
2Master NEC Articles 725, 760, 770, and 800 for cable classifications and wiring methods
3Study NM CID bonding, insurance, and continuing education requirements
4Practice fire alarm battery calculations and NFPA 72 testing frequencies
5Review TIA-568 structured cabling standards for the ES-7 exam scope

Frequently Asked Questions

What NM license do I need for alarm system work?

You need the ES-3 (Sound and Alarm) license from the CID. This covers fire alarm, burglar alarm, and sound system installations.

What is the ES-7 license for?

The ES-7 covers Telephone Systems including data cabling and telecommunications installations. It does not cover alarm work.

What exams does NM CID require?

NM CID requires both a written trade exam and a business/law exam. Both must be passed to obtain the license.

Can I do both alarm and telecom with one license?

No, ES-3 and ES-7 are separate licenses with distinct scopes. You need both licenses to perform both types of work.