NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

The function of a transformer in a lighting system is to change the voltage levels. Transformers are electrical devices that can either step up (increase) or step down (decrease) voltage levels, making them essential for ensuring that the electricity provided to lighting fixtures is at a suitable voltage for their operation. By adjusting the voltage, transformers help maintain efficiency in power distribution, enabling safe and effective use of lighting technologies.

In a typical electrical system, products may require high voltage for transmission over long distances, but lower voltage for actual usage. Transformers facilitate this by converting the high voltage electricity from the power source to a lower voltage that can be used safely in residential or commercial lighting applications. This role is crucial in both preventing equipment damage and ensuring compliance with safety standards.