Exam
Instructions:
• Choose the best answer for each question.
• Each question has one correct answer.
• Explanations are provided to reinforce learning.
1. What is the primary purpose of Title 24, Part 6 of the California Code of
Regulations as it applies to non-residential lighting?
A. To increase the cost of lighting systems
B. To ensure buildings use the most expensive fixtures
C. To reduce energy consumption and improve lighting efficiency
D. To promote incandescent lighting in commercial spaces
Answer: C
Explanation: Title 24, Part 6, aims to reduce energy consumption through efficient lighting
design, controls, and systems in new and existing buildings.
2. Which of the following is a mandatory feature required by Title 24 in non-
residential lighting systems?
A. Daylight harvesting controls
B. Occupancy sensors in restrooms
C. LED-only fixtures in all offices
D. Voice-activated lighting
Answer: B
Explanation: Occupancy sensors are required in spaces like restrooms and certain offices to
ensure lights turn off automatically when unoccupied, saving energy.
,3. Which lamp type is most energy-efficient and commonly used in compliance
with California energy standards?
A. Incandescent
B. Compact fluorescent (CFL)
C. Metal halide
D. Light Emitting Diode (LED)
Answer: D
Explanation: LEDs are the most energy-efficient, durable, and cost-effective lighting option
currently encouraged by Title 24 standards.
4. In a lighting retrofit, what is the primary benefit of using lighting controls
such as dimmers and timers?
A. Increase utility bills
B. Reduce lamp lifespan
C. Enhance energy savings and extend fixture life
D. Make the system more complex
Answer: C
Explanation: Lighting controls optimize energy usage and can extend the life of lighting
components by reducing usage when full output is unnecessary.
5. What is the typical voltage used for commercial indoor lighting systems in
California?
A. 12V
B. 120V
C. 277V
D. 480V
Answer: C
Explanation: Most commercial lighting systems in California use 277V for efficiency and
compatibility with 480/277V systems.
, 6. What is the required method for verifying non-residential lighting controls
under California’s energy code?
A. Visual inspection only
B. Building department walk-through
C. Acceptance testing by certified technician
D. Manufacturer’s guarantee
Answer: C
Explanation: Title 24 mandates that certified Acceptance Test Technicians verify lighting
control systems to ensure code compliance.
7. What is a primary function of a photocell in exterior lighting?
A. Provide manual dimming
B. Detect infrared heat
C. Automatically control lights based on ambient light levels
D. Monitor voltage drop
Answer: C
Explanation: Photocells detect daylight levels and automatically turn exterior lighting on at
dusk and off at dawn to conserve energy.
8. Which of the following is considered a high-efficacy luminaire under
California energy code?
A. Halogen track lighting
B. Incandescent chandelier
C. LED downlight with JA8 certification
D. Fluorescent fixture with T12 lamps
Answer: C
Explanation: JA8-certified LED luminaires meet California’s high-efficacy requirements and
are tested for performance, dimming, and longevity.
9. What type of documentation must be provided after installing lighting in a
commercial building to show code compliance?