100+ Free OR Low Voltage Practice Questions

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Maximum horizontal cable run per TIA-568?

50m

90m

150m

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

2026 Statistics

Key Facts: OR Low Voltage Exam

70%

Passing Score

OR BCD

3 years

Renewal Period

OR BCD

2020 NEC

Code Edition

OR BCD

100 Q

Practice Questions

OpenExamPrep

Oregon BCD offers Restricted Energy Technician and Limited Journeyman LE licenses for limited energy system installation, with exams, CE, and 3-year renewal cycles.

Sample OR Low Voltage Practice Questions

Try these sample questions to test your OR 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 Oregon agency regulates low voltage electrical licensing?

A.OR Department of Labor

B.OR Building Codes Division (BCD)

C.OR Construction Contractors Board

D.OR Department of Consumer Affairs

Explanation: The Oregon Building Codes Division (BCD), within the Department of Consumer and Business Services, regulates electrical licensing including restricted energy and limited energy technician classifications.

2What is the Restricted Energy Technician license in Oregon?

A.A general electrical contractor license

B.A license for installing low voltage systems under 100VA

C.A license for limited energy systems including fire alarm, security, and communications

D.A plumbing license

Explanation: Oregon's Restricted Energy Technician license authorizes installation of limited energy systems including fire alarm, security, telecommunications, and similar low voltage systems under the Building Codes Division.

3What is the Limited Journeyman Limited Energy (LE) license in Oregon?

A.A helper classification

B.A full journeyman electrician license

C.A license for installing limited energy systems with demonstrated experience

D.A supervisory-only license

Explanation: Oregon's Limited Journeyman LE license is for experienced technicians who have demonstrated competency through work experience and examination in limited energy system installation.

4Under NEC Article 725, what are the three classes of signaling circuits?

A.Class A, B, C

B.Class 1, 2, 3

C.Type 1, 2, 3

D.Grade 1, 2, 3

Explanation: NEC Article 725 defines Class 1, 2, and 3 circuits with different voltage/power limitations determining wiring methods and installation requirements.

5What NEC edition does Oregon currently use for electrical installations?

A.2017 NEC

B.2020 NEC

C.2023 NEC

D.2026 NEC

Explanation: Oregon has adopted the 2020 NEC as the basis for electrical installations. All low voltage work must comply with this edition plus any Oregon-specific amendments.

6In Oregon, what is required before performing low voltage electrical work?

A.Nothing

B.An electrical permit from the BCD or local jurisdiction

C.Only verbal owner approval

D.A federal license

Explanation: Oregon requires an electrical permit before performing low voltage work. Permits are obtained through the BCD or local jurisdictions that have assumed electrical inspection authority.

7Which NEC article covers fire alarm system installations?

A.Article 700

B.Article 725

C.Article 760

D.Article 800

Explanation: NEC Article 760 covers fire alarm system wiring including PLFA and NPLFA circuits, cable types, and separation requirements.

8What cable type is required for PLFA circuits in plenum spaces?

A.FPL

B.FPLR

C.FPLP

D.CM

Explanation: FPLP (Fire Power-Limited Plenum) cable is required in plenum spaces with low smoke and flame-spread characteristics per NEC 760.

9NFPA 72 minimum standby battery: how long?

A.12h + 5min alarm

B.24h + 5min alarm

C.24h + 15min alarm

D.48h + 10min alarm

Explanation: NFPA 72 requires 24 hours standby plus 5 minutes alarm operation for fire alarm system secondary power.

10Maximum horizontal cable run per TIA-568?

A.50m

B.90m

C.100m

D.150m

Explanation: TIA-568 limits horizontal runs to 90m. Total channel with patch cords cannot exceed 100m.

About the OR Low Voltage Exam

The Oregon low voltage contractor exam covers Restricted Energy Technician and Limited Journeyman Limited Energy classifications. Topics include NEC codes, fire alarm, security, telecommunications, and BCD regulations.

Questions

100 scored questions

Time Limit

2 hours

Passing Score

70%

Exam Fee

Varies (OR Building Codes Division (BCD))

OR Low Voltage Exam Content Outline

20%

OR BCD Regulations

Restricted Energy/Limited Journeyman LE licensing, permits, inspections, CE requirements

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 OR 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

OR Low Voltage Study Tips from Top Performers

1Understand Oregon's Restricted Energy vs Limited Journeyman LE license scopes and supervision requirements

2Master NEC Articles 725, 760, 770, and 800 for all circuit and cable requirements

3Study Oregon BCD permit and inspection procedures for low voltage work

4Practice NFPA 72 battery calculations and notification appliance spacing

5Review TIA-568 structured cabling standards and cable certification testing

Frequently Asked Questions

What Oregon license do I need for low voltage work?

Oregon BCD offers Restricted Energy Technician and Limited Journeyman Limited Energy licenses for limited energy system installation work.

What is the difference between the two license types?

Limited Journeyman LE has broader scope and can supervise. Restricted Energy Technician generally works under supervision with more limited scope.

How often do Oregon licenses renew?

Oregon electrical licenses renew every 3 years with continuing education requirements through BCD.

Do I need a permit for low voltage work in Oregon?

Yes, an electrical permit from BCD or local jurisdiction is required before performing low voltage installations.