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60 W incandescent lamp Power of Household Appliances Household appliances generally have their power indicated on them. Light fixtures sometimes allow only light bulbs of or below a certain power, for example 60 watts.
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This is because light bulbs with greater power may damage the lamp or the fixture due to heat they produce. In household lighting this problem may be solved by using lamps that are not incandescent, as those generally consume considerably less power for the same brightness output. Most manufacturers are working on improving the efficiency of appliances, as well as light bulbs.
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Brightness or luminosity of a light bulb depends on power and on the type of bulb. It is measured in lumens. Below is a comparison of power of different light sources for home use, with luminous power information. • 450 lumen: • Incandescent: 40 watts • Compact fluorescent: 9–13 watts • LED: 4–9 watts • 800 lumen.
12 W and 7 W fluorescent lamps • Incandescent: 60 watts • Compact fluorescent: 13–15 watts • LED: 10–15 watts • 1600 lumen: • Incandescent: 100 watts • Compact fluorescent: 23–30 watts • LED: 16–20 watts It is evident from the comparison above that the LEDs require less power, thus they are more efficient in operation. A unit price for an LED light is still high compared to incandescent lights, but over the long-term use it is cost-efficient. Some countries implemented or are planning to implement a ban on incandescent lights because of their low energy efficiency. Power of household appliances differs by the maker and the model and they have different power while performing different types of work, but here are some examples of average and approximate values. 5050 LED strip.
One LED consumes approximately 200 mW • Residential split system air conditioners: 20–40 kilowatts • Window air conditioners: 1–2 kilowatts • Ovens: 2.1–3.6 kilowatts • Washers and dryers: 2–3.5 kilowatts • Dishwashers: 1.8–2.3 kilowatts • Electric pots: 1–2 kilowatts • Microwave ovens: 0.65–1.2 kilowatts • Refrigerators: 0.5–1 kilowatts • Toasters: 0.7–0.9 kilowatts Power in Sports Machines are not the only objects that can be evaluated through power. Work produced by animals and humans can be measured using power. For example, power of an athlete throwing a basketball can be calculated by finding the force, with which she propels the ball for a given distance, and the time during which she completes this work. Some websites help athletes calculate the work performed and the power output for different types of physical exercises, based on the weight of the athlete and of the equipment used, the distance travelled, estimated using the athlete’s height for exercises like weight lifting, and the exercise duration. For example, this calculator shows that a person 170 cm tall and weighing 70 kg will produce a power output of 39.5 watts by doing 50 push-ups over the span of 10 minutes.