North Carolina Low Voltage Practice study guide
North Carolina Low Voltage Practice · Work through your exam, one topic at a time.
The North Carolina low voltage credential is a limited electrical contracting license for work on systems that carry signaling, communications, or control power rather than building mains power. It is aimed at contractors and technicians who install and service structured cabling, fire alarm and security wiring, data and audio/video distribution, and similar low-energy circuits. The North Carolina Low Voltage Practice study guide has 8 sections and about 3,696 words.
01Low Voltage Cabling Systems and Wiring Methods
The Low Voltage Cabling Systems and Wiring Methods domain tests whether you can choose, install, support, and protect low-voltage cable assemblies for communications, signaling, alarm, and control systems. The exam blends NEC Chapter 7 and Chapter 8 rules with manufacturer listing and industry installation practice.
483 words, about 2 min02Electrical Theory, Circuits, and Calculations
Electrical Theory, Circuits, and Calculations tests the math behind low-voltage power, control, and signal circuits: Ohm's law, power, series and parallel networks, voltage drop, AC impedance, and power-limited source calculations. Expect 12 VDC, 24 VDC, 24 VAC control, and PoE.
437 words, about 2 min03Codes and Standards (NEC Article 725, 760, 770, 800, 820; NC amendments)
Codes and Standards tests your ability to open the right NEC article, apply the correct cable and installation rules, and recognize North Carolina amendments. The key articles are 725 (Class 1, 2, and 3 circuits), 760 (fire alarm), 770 (optical fiber), 800 (communications), and 820 (CATV and radio distribution).
472 words, about 2 min04Grounding, Bonding, and Electrical Protection
Grounding, Bonding, and Electrical Protection tests the difference between grounding and bonding and the specific rules for low-voltage and communications systems. Expect Article 250 fundamentals plus 800.100, 820.93, 810.21, and intersystem bonding termination.
463 words, about 2 min05Fire Alarm, Security, and Life Safety Systems
Fire Alarm, Security, and Life Safety Systems tests circuit supervision, notification appliance circuits, battery calculations, detection devices, access control, and life-safety interfaces. NFPA 72 and NEC Article 760 are the controlling documents.
469 words, about 2 min06Data, Communications, and Audio/Video Distribution
Data, Communications, and Audio/Video Distribution tests structured cabling limits, cable categories, fiber and coax, PoE, and distributed audio and video. Expect TIA-568 and TIA-569 concepts plus practical field limits.
471 words, about 2 min07Business Practices, Contracting, and Licensing Law
Business Practices, Contracting, and Licensing Law tests how a low-voltage contractor legally obtains work, contracts, permits, insures the business, and gets paid in North Carolina. It is not a general business quiz; expect questions on licensing, scope, liens, and contract documents.
447 words, about 2 min08Safety, Tools, and Job Site Practices
Safety, Tools, and Job Site Practices tests safe execution: OSHA construction rules, NFPA 70E electrical safety, ladder and fall protection, lockout/tagout, tool use, fiber and battery hazards, and housekeeping. The exam expects field judgment, not slogans.
454 words, about 2 min