CLC Study Guide 2026
Everything you need to pass the CLC exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📚 CLC Topics to Study (69)
✍️ Sample CLC Questions & Answers
1. In a Lutron RadioRA 2 wireless system, what is the maximum number of devices supported per system?
Lutron RadioRA 2 supports up to 200 devices per system, making it suitable for mid-sized residential and small commercial applications.
2. Which life-cycle cost component accounts for lamp and ballast replacements over a fixture's service life?
Maintenance costs include group relamping, spot replacement labor, and component (driver/ballast) replacements over the fixture's lifetime.
3. Which control approach is specifically required by California's Title 24 energy code for all indoor lighting in newly constructed non-residential buildings?
Title 24 mandates occupancy sensors and daylighting controls (photosensors) throughout non-residential new construction to reduce energy use.
4. How does smart lighting improve user experience?
Smart lighting systems offer advanced functionalities beyond basic on/off control, such as scheduling, remote operation via apps, and scene setting. Users can automate lighting based on routines, personalize light color and intensity, and integrate with other smart home devices. This provides enhanced convenience, comfort, and a tailored lighting experience for occupants.
5. A utility's 'demand charge' penalizes buildings based on which electrical characteristic?
Demand charges are based on the highest power draw (kW) recorded during any short interval (typically 15 minutes) in the billing period.
6. Which type of dimming control maintains constant light output over a lamp's life by increasing power as lumens depreciate?
Lumen maintenance dimming starts fixtures at reduced output and increases drive current over time to compensate for lumen depreciation, saving energy early in lamp life.