Oregon Low Voltage Practice case studies
Oregon Low Voltage Practice · Put your knowledge to work in context.
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 exam draws from Oregon electrical law and administrative rules, the National Electrical Code (NFPA 70), low-voltage wiring methods, grounding and overcurrent protection, fire alarm and communication systems, power-limited circuits, and jobsite safety. Because the scope is broad, preparation should combine a careful reading of the current Oregon Revised Statutes and OAR 918-281 through 918-311 with a code-based study of NEC Articles 725, 760, 800, and related wiring methods. The Oregon Low Voltage Practice case studies are 5 cases and about 2,859 words.
1The Deck Receptacle Request
An Oregon limited energy technician holds a security-class limited energy license and works for a limited energy contractor. A homeowner asks the technician to add a 120-volt GFCI receptacle on a new deck to supply a 24-volt landscape lighting transformer.
564 words, about 3 min2Plenum Ceiling Surprise
During a tenant improvement in a 1980s office building, a low-voltage contractor is installing 22 PoE security cameras. The ceiling cavity above the suspended ceiling is used as a return-air plenum.
573 words, about 3 min3Fire Alarm Retrofit in a Small Motel
A 24-room motel is adding a breakfast area. The existing addressable fire alarm panel is not networked.
561 words, about 3 min4Grounding the Outdoor Camera Poles
An installer is commissioning 12 outdoor camera poles in a parking lot. Each camera draws about 4 VA at 24 volts AC from a single 100 VA transformer in the building.
577 words, about 3 min5The Historic Building Knob-and-Tube Clearance
A crew is installing 12 new Cat 6 cables for access control and cameras in the attic of a 1920s brick building. The attic has about 6 inches of clearance, blown insulation, and old knob-and-tube wiring feeding existing lighting circuits.
584 words, about 3 min