NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

The most common failure in an induction luminaire is related to which component?

1. Generator / driver

2. Vessel/Lamp

3. Socket

4. Igniter

The correct answer is: Generator / driver

The most common failure in an induction luminaire is indeed closely related to the generator or driver. In induction lighting systems, the generator or driver is responsible for powering the lamp and ensuring that it operates correctly. This component generates the high-frequency electromagnetic field that excites the gas within the lamp to produce light. Over time, factors such as heat, electrical stress, and general wear can lead to the degradation of the generator or driver, resulting in flickering lights or complete failure of the luminaire. This is a common issue because the driver operates continuously during the lifespan of the lamp, making it subject to a range of operational stresses. While other components like the vessel/lamp, socket, and igniter can also experience failures, the generator or driver is typically the component that is most prone to issues in induction luminaires, making it the primary focus when diagnosing lighting failures in this type of system.