Practice Test Geeks(CLC) Certified Lighting Consultant Practice Test
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Energy Efficiency & Sustainability Flashcards

7 cards from real CLC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Energy Efficiency & Sustainability flashcards as text

  1. What does LEED v4 award points for in its 'Optimize Energy Performance' credit related to lighting?

    Answer: Achieving LPD 10% below ASHRAE 90.1 baseline

    LEED awards incremental points for reducing whole-building energy cost or LPD below the ASHRAE 90.1 baseline by specific percentages.

  2. A school gymnasium has 12 fixtures at 250W each operating 2,000 hours per year. What is the annual energy consumption?

    Answer: 6,000 kWh

    Energy = 12 fixtures × 250W × 2,000 hrs ÷ 1,000 = 6,000 kWh.

  3. Which control approach is specifically required by California's Title 24 energy code for all indoor lighting in newly constructed non-residential buildings?

    Answer: Occupancy sensing and daylighting controls

    Title 24 mandates occupancy sensors and daylighting controls (photosensors) throughout non-residential new construction to reduce energy use.

  4. What is the key difference between a luminaire's 'rated wattage' and its 'system wattage'?

    Answer: System wattage includes driver and ballast losses; rated wattage is lamp-only

    System wattage accounts for all energy consumed including driver, ballast, and control gear losses, giving a more accurate picture of actual energy use.

  5. In sustainable lighting design, what is 'adaptive lighting'?

    Answer: Lighting that automatically adjusts to changing occupancy and daylight conditions

    Adaptive lighting systems dynamically respond to occupancy, task needs, and available daylight to deliver the right amount of light when and where needed.

  6. Which factor most significantly reduces LED efficacy in real-world installations compared to manufacturer data sheet values?

    Answer: Elevated junction temperature from inadequate thermal management

    High junction temperatures cause LED lumen output to decrease and accelerate depreciation, so poor thermal design significantly reduces real-world efficacy.

  7. A utility's 'demand charge' penalizes buildings based on which electrical characteristic?

    Answer: Peak kilowatt draw during billing period

    Demand charges are based on the highest power draw (kW) recorded during any short interval (typically 15 minutes) in the billing period.