Page 1 of 112
California C-7 Low Voltage Systems Contractor EXAM
ACTUAL Exam ALL 200 QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
California C-7 Low Voltage Systems Contractor Exam Overview
The C-7 Low Voltage Systems Contractor license in California allows for the installation, service,
and maintenance of systems that do not exceed 91 volts. The exam is a comprehensive test of
both technical proficiency and safety compliance.
Exam Content Areas
Planning and Estimation: Reading blueprints, job site surveys, material take-offs, and labor
costs.
System Design and Installation: Layouts for structured cabling, fiber optics, and wireless
networks.
Communication Systems: VOIP, intercoms, public address, and telecommunications.
Safety and Security Systems: CCTV, access control, and burglar alarm integration.
Audio and Video Systems: Home theater, digital signage, and sound reinforcement.
Testing and Maintenance: Troubleshooting, signal testing (dB loss), and system certification.
Safety and Regulatory Compliance: California Building Code (CBC), National Electrical Code
(NEC/NFPA 70), and Cal/OSHA requirements.
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BATCH 1: Infrastructure and Regulatory Compliance
Questions 1–100
1. What is the primary purpose of a low voltage system in a commercial building?
A. Deliver main electrical service
B. Provide communication, security, and data services
C. Supply backup generator power
D. Control HVAC loads
Correct Answer: B
Rationale: Low voltage systems are specialized for signal transmission rather than high-capacity
power distribution.
2. According to the NEC, low voltage wiring is generally defined as being under what voltage?
A. 150 volts
B. 91 volts
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C. 120 volts
D. 600 volts
Correct Answer: B
Rationale: While some codes vary, for the California C-7 license, systems are defined as
operating at 91 volts or less.
3. Which NEC Article covers the installation of Power-Limited Fire Alarm (PLFA) circuits?
A. Article 725
B. Article 760
C. Article 800
D. Article 770
Correct Answer: B
Rationale: Article 760 specifically addresses Fire Alarm Systems, distinguishing between power-
limited and non-power-limited circuits.
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4. When pulling Category 6 (Cat6) cable, what is the maximum recommended pull tension to
avoid damaging the internal twists?
A. 15 lbs
B. 25 lbs
C. 50 lbs
D. 100 lbs
Correct Answer: B
Rationale: Exceeding 25 lbs of tension can stretch the copper and untwist the pairs, leading to
crosstalk and failed certifications.
5. What is the maximum distance for a horizontal permanent link in structured cabling per
TIA/EIA 568 standards?
A. 100 meters (328 ft)
B. 90 meters (295 ft)
C. 50 meters (164 ft)
4
California C-7 Low Voltage Systems Contractor EXAM
ACTUAL Exam ALL 200 QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
California C-7 Low Voltage Systems Contractor Exam Overview
The C-7 Low Voltage Systems Contractor license in California allows for the installation, service,
and maintenance of systems that do not exceed 91 volts. The exam is a comprehensive test of
both technical proficiency and safety compliance.
Exam Content Areas
Planning and Estimation: Reading blueprints, job site surveys, material take-offs, and labor
costs.
System Design and Installation: Layouts for structured cabling, fiber optics, and wireless
networks.
Communication Systems: VOIP, intercoms, public address, and telecommunications.
Safety and Security Systems: CCTV, access control, and burglar alarm integration.
Audio and Video Systems: Home theater, digital signage, and sound reinforcement.
Testing and Maintenance: Troubleshooting, signal testing (dB loss), and system certification.
Safety and Regulatory Compliance: California Building Code (CBC), National Electrical Code
(NEC/NFPA 70), and Cal/OSHA requirements.
1
, Page 2 of 112
BATCH 1: Infrastructure and Regulatory Compliance
Questions 1–100
1. What is the primary purpose of a low voltage system in a commercial building?
A. Deliver main electrical service
B. Provide communication, security, and data services
C. Supply backup generator power
D. Control HVAC loads
Correct Answer: B
Rationale: Low voltage systems are specialized for signal transmission rather than high-capacity
power distribution.
2. According to the NEC, low voltage wiring is generally defined as being under what voltage?
A. 150 volts
B. 91 volts
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C. 120 volts
D. 600 volts
Correct Answer: B
Rationale: While some codes vary, for the California C-7 license, systems are defined as
operating at 91 volts or less.
3. Which NEC Article covers the installation of Power-Limited Fire Alarm (PLFA) circuits?
A. Article 725
B. Article 760
C. Article 800
D. Article 770
Correct Answer: B
Rationale: Article 760 specifically addresses Fire Alarm Systems, distinguishing between power-
limited and non-power-limited circuits.
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4. When pulling Category 6 (Cat6) cable, what is the maximum recommended pull tension to
avoid damaging the internal twists?
A. 15 lbs
B. 25 lbs
C. 50 lbs
D. 100 lbs
Correct Answer: B
Rationale: Exceeding 25 lbs of tension can stretch the copper and untwist the pairs, leading to
crosstalk and failed certifications.
5. What is the maximum distance for a horizontal permanent link in structured cabling per
TIA/EIA 568 standards?
A. 100 meters (328 ft)
B. 90 meters (295 ft)
C. 50 meters (164 ft)
4
