Practice Test Geeks(CLC) Certified Lighting Consultant Practice Test
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CLC Residential Lighting Design Flashcards

6 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 6 CLC Residential Lighting Design flashcards as text

  1. Which Title 24 requirement in California most directly affects residential lighting fixture selection?

    Answer: Minimum efficacy requirements and high-efficacy lamp mandates for most fixtures

    California Title 24 mandates high-efficacy lamps (typically LED) in the majority of residential luminaires to meet energy efficiency standards.

  2. A residential client complains that their dimmed LED downlights flicker noticeably. The most likely cause is which compatibility issue?

    Answer: Mismatch between the LED driver and the legacy phase-cut (TRIAC) dimmer switch

    TRIAC/phase-cut dimmers designed for incandescent loads often conflict with LED drivers, causing flicker, buzzing, or dropout at low levels.

  3. For residential stairway lighting, which design principle is most critical for safety?

    Answer: Eliminating shadows on tread nosings and maintaining adequate illuminance on all steps

    Stairway lighting must clearly reveal tread edges (nosings) and maintain uniform illuminance to prevent missteps and falls.

  4. Which mounting type is typically used for residential under-cabinet kitchen lighting to provide task illumination on countertops?

    Answer: Linear LED strip or puck lights mounted at the cabinet's front edge

    Under-cabinet linear LED strips or puck lights installed near the front edge of wall cabinets cast light directly onto the countertop with minimal shadow.

  5. In residential bedroom design, which lighting strategy is recommended to minimize blue-light exposure before sleep?

    Answer: Dimming to low levels with warm (2700K or below) CCT in the evening

    Dimmed, warm-CCT light in the hours before sleep reduces circadian-disrupting blue-light exposure, supporting melatonin production.

  6. When installing recessed fixtures in an insulated ceiling, which IC (Insulation Contact) rating is required?

    Answer: IC-rated fixtures approved for direct contact with insulation

    IC-rated fixtures are required when they will be in direct contact with insulation, preventing overheating and fire hazards.