NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

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Prepare for the NALMCO Certified Apprentice Lighting Technician Test. Enhance your knowledge with multiple-choice questions, tips, and exam insights to ensure success. Get ready to shine in your exam!

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What is the diameter of a T8 lamp?

0.5 inches
5/8 inches
1 inch
1.5 inches

The correct answer is: 1 inch

The diameter of a T8 lamp is indeed 1 inch. In the naming convention for fluorescent lamps, the "T" designates the type of lamp based on its diameter, with the number following the "T" indicating the diameter in eighths of an inch. Therefore, a T8 lamp has a diameter of 8 eighths, which translates to 1 inch. This standardized measurement is crucial for ensuring compatibility with fixtures designed for this specific lamp type. Understanding the sizing of these lamps is essential for proper lighting installation and maintenance in various settings.