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Key Facts: AZ ROC CR-67 Low Voltage Communication Systems Exam

80

Official Scored Questions

PSI Arizona ROC CR-67 Bulletin

120 Minutes

Time Limit

PSI Content Outline

70%

Passing Score

Arizona Registrar of Contractors

$66

Exam Fee

PSI Services LLC

Open-Book Computerized

Format

PSI Services LLC

2 Years

Trade Experience Requirement

Arizona Registrar of Contractors

Prepare for the official Arizona ROC CR-67 / C-67 Low Voltage Communication Systems contractor exam with 100 verified practice questions mapped directly to NEC, TIA/EIA, FOA, BICSI, and OSHA standards. The official PSI trade test consists of 60 questions over 180 minutes with a 70% passing threshold ($66 exam fee). This practice question bank delivers targeted questions covering code navigation, optical loss calculations, copper certification metrics, and pathway design.

Sample AZ ROC CR-67 Low Voltage Communication Systems Practice Questions

Try these sample questions to review concepts for the AZ ROC CR-67 Low Voltage Communication Systems exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1According to NEC Article 725, what is the maximum power rating (in VA) allowed for a inherently limited Class 2 power source operating at AC voltages up to 30 volts?
A.100 VA
B.250 VA
C.300 VA
D.500 VA
Explanation: Under NEC Article 725 Table 11(A), an inherently limited Class 2 AC power source operating at 0 to 30 volts has a maximum apparent power rating of 100 VA. Class 2 circuits are designed to limit current and power to levels that prevent electrical fire and shock hazards.
2In communications cabling installations under NEC Article 800, which cable type is permitted as a direct substitute for Type CMR (Riser) communications cable?
A.Type CMP
B.Type CMG
C.Type CM
D.Type CMX
Explanation: According to NEC 800.154 and Figure 800.154(a), Type CMP (Plenum) cable is higher in the hierarchy than Type CMR (Riser) and can substitute for CMR, CMG, CM, and CMX cables. Higher fire-resistance rated cables may substitute for lower-rated cables, but not vice versa.
3Which optical fiber cable type is designated by NEC Article 770 for installation in ducts, plenums, and other spaces used for environmental air, containing nonconductive materials only?
A.Type OFNP
B.Type OFCP
C.Type OFNR
D.Type OFNG
Explanation: NEC 770.179(A) defines Type OFNP as Optical Fiber Nonconductive Plenum cable, which is listed as having adequate fire-resistant and low-smoke-producing characteristics for plenum spaces. OFCP contains metallic/conductive components.
4According to NEC Article 760, which Power-Limited Fire Alarm (PLFA) cable rating is required for vertical runs in a shaft penetrating more than one floor?
A.Type FPLR
B.Type FPL
C.Type PLTC
D.Type CL2
Explanation: NEC 760.154(B) specifies that power-limited fire alarm cables installed in vertical runs and penetrating more than one floor must be Type FPLR (Power-Limited Fire Alarm Riser) or Type FPLP (Plenum). Type FPL is for general purpose single-floor horizontal runs.
5Under NEC 725.136, what is the minimum required separation distance between Class 2 or Class 3 conductors and ungrounded electric light, power, or Class 1 conductors when not separated by a permanent barrier?
A.2 inches (50 mm)
B.6 inches (150 mm)
C.12 inches (300 mm)
D.24 inches (600 mm)
Explanation: NEC 725.136(A) requires Class 2 and Class 3 circuit conductors to be separated by at least 2 inches (50 mm) from conductors of electric light, power, Class 1, or non-power-limited fire alarm circuits unless separated by a barrier or continuous raceway.
6What does NEC Article 800 require regarding accessible abandoned communications cables during building renovation?
A.Accessible abandoned cables must be removed unless tagged for future use.
B.Abandoned cables may remain indefinitely if insulated at both ends.
C.All abandoned cables must be painted orange for identification.
D.Only plenum cables must be removed; riser cables are exempt.
Explanation: NEC 800.25 mandate states that the accessible portion of abandoned communications cables must be removed. An exception is made if cables are identified/tagged for future use with a tag capable of withstanding the environment.
7Under NEC 770.133, nonconductive optical fiber cables (Type OFNP/OFNR) may occupy the same raceway or enclosure with electric light and power conductors ONLY if:
A.The optical fiber cables are serving the power-utilization equipment.
B.The power conductors operate at less than 120 volts.
C.The fiber cable is metallic-armored.
D.The raceway is installed underground.
Explanation: NEC 770.133(B) allows nonconductive optical fiber cables in the same cabinet, outlet box, or raceway with electric light and power conductors solely where the optical fibers are functionally associated with the control or power utilization equipment.
8Where must a listed primary protector be located for communications circuits entering a building according to NEC 800.90?
A.In immediate proximity to the point of entrance.
B.At the main distribution frame regardless of entrance distance.
C.At least 50 feet inside the building perimeter.
D.On the roof exterior adjacent to the service mast.
Explanation: NEC 800.90(B) mandates that the primary protector shall be located in immediate proximity to the point of entrance, inside or outside the building, to minimize un-protected communications conductor length inside structure.
9Which wiring method requirement applies to Class 1 remote-control and signaling circuits governed by NEC 725.46?
A.Class 1 circuits must be installed in accordance with Chapter 3 wiring methods.
B.Class 1 circuits may use open unjacketed thermostat wire in drop ceilings.
C.Class 1 circuits are limited to 30 volts maximum.
D.Class 1 circuits do not require overcurrent protection.
Explanation: NEC 725.46 specifies that Class 1 circuits shall be installed in accordance with the applicable requirements of Chapter 3 (such as EMT, rigid conduit, MC cable), because Class 1 circuits can operate up to 600 volts and carry substantial power.
10Under NEC 800.53, what is the minimum required clearance between open communications conductors and lightning protection system conductors?
A.6 feet (1.8 m)
B.2 feet (600 mm)
C.10 feet (3.0 m)
D.12 inches (300 mm)
Explanation: NEC 800.53 states that a clearance of at least 6 ft (1.8 m) shall be maintained between communications wires and cables on buildings and lightning conductors, unless bonding is established per NEC Article 250.

About the AZ ROC CR-67 Low Voltage Communication Systems Exam

The Arizona ROC CR-67 (Dual Residential/Commercial) and C-67 (Commercial) Low Voltage Communication Systems examination is a computer-delivered, open-book trade licensing test administered by PSI Services LLC on behalf of the Arizona Registrar of Contractors. The 180-minute exam contains 80 scored multiple-choice questions covering all technical aspects of commercial and residential telecommunications, structured cabling, optical fiber systems, bonding/grounding, pathways, testing, and jobsite safety. Key topics include NEC Articles 725, 760, 770, and 800/805, TIA-568 copper and fiber standards, TIA-569 pathways and spaces, TIA-607 grounding, PoE load calculations, optical loss budget analysis, OTDR trace interpretation, and OSHA 1926 safety regulations. Candidates must achieve a minimum score of 70% to pass.

Exam sponsor: Arizona ROC / PSI Services LLC. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

60 questions

Time Limit

120 minutes

Passing Score

70%

Exam / Certification Fees

$66

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

  • NFPA 70: National Electrical Code (NEC) 2023/2026 (Articles 250, 300, 725, 760, 770, 800, 805)
  • ANSI/TIA-568.0-D / 568.1-D / 568.2-D: Generic Telecommunications Cabling for Customer Premises & Balanced Twisted-Pair Cabling
  • ANSI/TIA-568.3-D: Optical Fiber Cabling Components Standard
  • ANSI/TIA-569-E: Telecommunications Pathways and Spaces
  • ANSI/TIA-606-C: Administration Standard for Telecommunications Infrastructure
  • ANSI/TIA-607-D: Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises
  • FOA (Fiber Optic Association) Reference Guide to Fiber Optics
  • BICSI Telecommunications Distribution Methods Manual (TDMM)
  • OSHA 29 CFR 1926 Construction Industry Safety Standards
  • PSI Candidate Information Bulletin - Arizona Registrar of Contractors CR-67 Low Voltage Communication Systems

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

25%

General Low Voltage Electrical Knowledge

15 of 60 items on the official PSI content outline. Ohm's law, power limits, Class 2 and 3 circuits, NEC Articles 725/760/770/800 basics and pathways.

23%

Conductors

14 of 60 items on the official PSI content outline. Copper and fiber cable types, categories, ratings, terminations, supports and separation from power.

20%

Fire and Security Detection and Alarms

12 of 60 items on the official PSI content outline. Initiating and notification devices, circuit classes, survivability and NFPA 72 practice.

17%

Digital Communications Systems

10 of 60 items on the official PSI content outline. Structured cabling, networking, Power over Ethernet and telecommunications rooms.

12%

Grounding and Bonding

7 of 60 items on the official PSI content outline. Telecommunications bonding backbone, busbars, primary protectors and surge protection.

3%

PA Systems

2 of 60 items on the official PSI content outline. Public address and audio distribution wiring and speaker circuits.

Preparing for the AZ ROC CR-67 Low Voltage Communication Systems Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 60 questions
  • Time limit: 120 minutes
  • Exam / certification fees: $66 Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

AZ ROC CR-67 Low Voltage Communication Systems: Suggested Study Strategy

1Memorize cable fire rating hierarchies per NEC Articles 725, 770, and 800: CMP (Plenum) can substitute for CMR (Riser) and CM (General Purpose), but lower-rated cables cannot be substituted for plenum or riser applications.
2Master fiber optical loss budget calculations: Total Loss = (Fiber Length in km * Attenuation Rate dB/km) + (Number of Connectors * Connector Loss dB) + (Number of Splices * Splice Loss dB).
3Understand TIA-568 pinouts: T568A wire pairs are (1) White/Green, (2) Green, (3) White/Orange, (4) Blue, (5) White/Blue, (6) Orange, (7) White/Brown, (8) Brown. T568B swaps Pair 2 (Green) and Pair 3 (Orange).
4Know grounding requirements under NEC 800.100 and TIA-607: Telecommunications Grounding Busbar (TGB), Telecommunications Main Grounding Busbar (TMGB), minimum 6 AWG copper bonding conductor, and max 20-foot grounding conductor length to the building grounding electrode system where feasible.
5Review OTDR test traces for Tier 2 fiber certification: identify Fresnel reflections (connectors and reflective mechanical splices), non-reflective events (fusion splices and sharp bends), and attenuation dead zones.

Frequently Asked Questions

What work is authorized under the Arizona ROC CR-67 license?

The CR-67 license classification authorizes contractors to install, service, and maintain low voltage communication systems in residential and commercial structures. This includes telephone, data, structured cabling networks, fiber optics, sound systems, intercoms, public address, master antenna television (MATV/CATV), and power-limited signaling circuits.

How many questions are on the official AZ ROC CR-67 trade exam, and what is the passing score?

The official PSI CR-67 content outline lists 60 multiple-choice questions with 120 minutes allowed. A minimum passing score of 70% (at least 42 correct answers) is required.

Is the Arizona CR-67 Low Voltage exam open-book?

Yes. The examination is open-book. Candidates are permitted to bring approved reference materials—such as the National Electrical Code (NFPA 70), TIA cabling standards reference books, BICSI manuals, and OSHA 1926 rules—into the PSI testing center, provided they are bound and tabbed per PSI instructions.

What calculations appear on the CR-67 Low Voltage examination?

Calculations on the CR-67 exam include optical link attenuation loss budgets (dB = length x loss/km + splice loss + connector loss), conduit fill percentage (max 40% for 3+ cables), copper cable length/propagation delay, voltage drop for 24VAC/24VDC Class 2 circuits, and Power over Ethernet (PoE) bundle thermal rise limits.

What is the difference between C-67, R-67, and CR-67 licenses?

C-67 covers commercial low voltage communication systems, R-67 covers residential low voltage communication systems, and CR-67 is a dual license covering both commercial and residential systems. Passing the CR-67 trade exam fulfills the technical examination requirement for all three licenses.