Yes. For best operation, it is very important that the designated voltage marked on your bulb correspond to the circuit voltage on your electric line or outlet. Thus, a 120-volt bulb should be used on a 120-volt current. Any appreciable variation from this will cause wide variation in the life and efficiency of the bulb. For example, operating bulb just five-[5] volts over the recommended voltage, may reduce its life expectancy by up to 40%.

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