NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

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What is the first step to troubleshoot a lighting system?

Check for ambient light sources

Inspect the color of the bulbs

Check the power supply and ensure the circuit is operational

The first step in troubleshooting a lighting system is to check the power supply and ensure the circuit is operational. This step is foundational because, without power, no lights will function, regardless of their condition. By confirming that the circuit is live and the power supply is functioning correctly, you can rule out one of the most common issues in lighting failures.

If the power supply is good, you can proceed to investigate other potential issues, such as bulb integrity, wiring, or environmental factors affecting the lighting. This systematic approach is crucial for effective troubleshooting, as it helps isolate the problem efficiently.

Change all light bulbs

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