Whenever your light runs on lover Voltage than the standard 230-240V you will need a ballast to regulate the voltage. You can think of a ballast as a regulator, a device that regulates the power so that the light receives the correct power that it needs. Without a ballast to limit its current, a lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw.
What is a ballast?
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