Oregon Low Voltage Practice study guide
Oregon Low Voltage Practice · Work through your exam, one topic at a time.
The Oregon Low Voltage Practice exam is a multiple-choice licensing test for electricians who install and maintain limited-energy and low-voltage systems, such as fire alarms, security, communications, and Class 2/3 circuits. It is intended for candidates seeking an Oregon limited energy technician license or electrical specialty contractor credential. The Oregon Low Voltage Practice study guide has 8 sections and about 2,755 words.
01Oregon Electrical Specialty Contractor and Licensing Law
Oregon's electrical licensing system is administered by the Building Codes Division (BCD) under ORS chapter 479, with advice from the Electrical and Elevator Board. BCD issues electrical contractor licenses, including specialty and limited-energy categories, and electrician licenses such as supervising electrician, journeyman, and limited-energy technician.
347 words, about 2 min02Oregon Electrical Code and Administrative Rules (OAR 918-281 through 918-311)
Oregon adopts NFPA 70 through BCD administrative rules in OAR chapter 918. Divisions 281 through 311 cover the Electrical and Elevator Board, licensing, permits, code adoption, inspections, and limited-energy activity.
349 words, about 2 min03NFPA 70 General Requirements and Wiring Methods
Article 100 definitions and Article 110 general requirements apply before any Chapter 3 wiring method is selected. Equipment must be listed and installed per its instructions (110.3).
361 words, about 2 min04Low Voltage and Limited Energy Circuits, Cable, and Raceways
Low-voltage work is not one NEC article. Article 725 covers Class 2 and Class 3 circuits; Article 800 covers communications circuits; Article 820 covers coaxial cable; Article 830 covers network-powered broadband.
338 words, about 2 min05Grounding, Bonding, and Overcurrent Protection for Low Voltage Systems
Article 250 supplies the general grounding and bonding rules for premises wiring. Low-voltage Class 2 and Class 3 circuits are often isolated from ground, but that does not mean grounding and bonding can be ignored.
349 words, about 2 min06Fire Alarm, Security, and Communication Systems
NEC Article 760 divides fire alarm circuits into non-power-limited fire alarm (NPLFA) and power-limited fire alarm (PLFA) circuits. NPLFA circuits use Chapter 3 wiring methods.
318 words, about 2 min07Class 2 and Class 3 Circuits and Power-Limited Systems
Article 725 defines Class 2 and Class 3 circuits by the power source and its limits. A listed Class 2 or Class 3 power source establishes the circuit class.
358 words, about 2 min08Electrical Safety, Tools, and Jobsite Practices
NFPA 70E and Oregon OSHA rules apply even when the nominal voltage is 24 volts. Low-voltage circuits can still cause burns, arcing, unexpected equipment start-up, and falls when a technician is startled.
335 words, about 2 min