The power used by night lights is listed by the wattage used by the lights. In addition, when the indoor light increases during the day, some night lights automatically turn off. The wattage multiplied by the light's use time determines the power used by the night light.

Watts

There are many types of night lights, including incandescent, neon, electroluminescent and LED (light emitting diodes). The light shall have a rated power listed by UL (Underwriters Laboratories). This is the power that will be consumed when the night light is on. Typical incandescent or neon night lights consume about 1.5 to 7.5 watts of energy. LEDs and electroluminescent night lights consume less than one watt of power.

significance
The power of the night light and the burning time of the light determine the amount of electricity it uses. The manual switch night light will run when turned on and stop when turned off. Automatic night lights have light sensors that turn off when the room's light reaches a certain level. Multiplying the wattage by the number of hours you light the light determines the amount of power used by the night light. For example, using 1.5 watts of light for 12 hours will consume 18 watts of time. This equates to a 60 watt light using only 20 watts.

Average power consumption
US homes use an average of about 920 kWh per month. This is equivalent to approximately 30 kWh per day. About 15% of it is used for lighting, and about 4.5 kWh is used for lighting every day.

Night light electricity
A single 1.5-watt night light that uses 12 hours a day consumes about 0.4% of the total electricity consumption of ordinary residential lighting in the United States. A 7.5-watt night light burns for 2 hours and consumes 2% of the total lighting power.

Precautions
Some special night lights have a power rating of less than one watt. The wattage does not determine the light output of the light. Modern designs are more efficient than incandescent lights and can produce more light with less wattage. Other factors to consider are the initial cost of the night light and how long the night light may last. Although night lights use much less power than ordinary lights, they last longer.

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