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How To Test A Fluorescent Bulb


Testing a fluorescent bulb is an important step in ensuring that the bulb is functioning correctly. In order to properly test a fluorescent bulb, you will need to have access to a fluorescent ballast and starter, as well as a multimeter. Once you have all of the necessary equipment, you can follow these steps to test the bulb.

Step 1: Prepare the ballast and starter by connecting them to the fluorescent bulb. This can be done by unscrewing the ends of the ballast, which is usually located on the side of the bulb, and inserting the starter and the two pins of the bulb into the open holes. Be sure to tighten the screws after all components are inserted.

Step 2: Set the multimeter to measure resistance. Turn the knob to the “Ohms” setting, which is usually represented by a sideways omega symbol, or an “R” inside a circle.

Step 3: Connect the multimeter to the bulb. You will need to connect one end of the multimeter to the starter and the other end to the bulb. Make sure that the multimeter is securely connected to both components.

Step 4: Read the resistance reading. Once the multimeter is connected to the bulb, the resistance reading should be displayed on the multimeter’s screen. The resistance reading should be between 0.1 and 0.3 ohms. If the reading is outside this range, it is likely that the bulb is not functioning correctly.

Step 5: Disconnect the multimeter and turn off the power to the bulb. Remove both ends of the multimeter from the starter and the bulb. Once the multimeter is disconnected, turn off the power to the bulb. This will prevent any further damage to the bulb.

Testing a fluorescent bulb is an important part of ensuring that the bulb is functioning correctly. By following the steps outlined above, you can easily test a fluorescent bulb using a multimeter and ballast and starter. Make sure to always disconnect the power to the bulb before removing the multimeter to prevent any further damage.