California IDEX Practice Exam

According to the California Energy code, what type of luminaire is considered high-efficacy?

1. Low-voltage incandescent

2. Track lighting

3. Fluorescent with electronic ballast

4. Quartz halogen

The correct answer is: Fluorescent with electronic ballast

The choice of fluorescent luminaires with electronic ballasts as high-efficacy is grounded in their ability to convert electrical energy into light more efficiently than many traditional lighting options. High-efficacy luminaires have a higher luminous output relative to the power they consume, making them essential for energy savings and efficiency goals set forth by the California Energy Code. Fluorescent lights, particularly those with electronic ballasts, utilize a gas-filled tube that produces light when electricity is passed through it. The introduction of electronic ballasts enhances their efficiency, providing a greater lumen output with less energy use compared to traditional incandescent fixtures or halogen lamps. This is why they are classified under high-efficacy lighting. Other types of luminaires listed do not meet the high-efficacy criteria set by the energy code. Low-voltage incandescent lighting, for instance, is known for lower energy efficiency. Track lighting options often include a mix of bulb types, and while some may be efficient, many traditional options do not qualify. Lastly, quartz halogen lights, while providing good light quality, are generally less efficient than fluorescent options, leading them to be classified as standard rather than high-efficacy.