Converter watts to amperes. How much electricity do household appliances consume?

Power consumption is one of the main characteristics of electrical appliances. Therefore, on any electrical appliance or in its instructions there must be accurate information about the number of watts required for its operation. Of course, the amount of electricity consumed may vary. For example, the amount of energy consumed by a computer depends on the power of the power supply and the load on the computer. In the case of a refrigerator, it depends on its volume and the amount of food stored in it, and with a washing machine - on the washing mode, set temperature, weight of laundry, etc. I offer you a list of various electrical appliances indicating their approximate power in watts, which will help you calculate your electricity consumption.

1. Electric oven - 17,221 watts
2. Central air conditioner - 5000 watts
3. Dryer for clothes and clothes - 3400 watts
4. Electric oven – 2300 watts
5. Dishwasher - 1800 watts
6. Hairdryer – 1538 watts
7. Heater – 1500 watts
8. Coffee maker – 1500 watts
9. Microwave - 1500 watts
10. Popcorn maker – 1400 watts
11. Toaster oven (oven toaster) – 1200 watts
12. Iron - 1100 watts
13. Toaster – 1100 watts
14. Room air conditioner – 1000 watts
15. Electric cooker - 1000 watts
16. Vacuum cleaner – 650 watts
17. Water heater - 479 watts
18. Washing machine - 425 watts
19. Espresso coffee maker (espresso machine) – 360 watts
20. Dehumidifier - 350 watts
21. Plasma TV - 339 watts
22. Blender – 300 watts
23. Freezer - 273 watts
24. Liquid crystal TV (LCD) – 213 watts
25. Game console - 195 watts
26. Refrigerator - 188 watts
27. Regular TV (with a cathode ray tube) - 150 watts

28. Monitor – 150 watts

29. Computer (power supply) – 120 watts
30. Portable fan – 100 W
31. Electric blanket – 100 W
32. Stand mixer – 100 W
33. Electric can opener – 100 W
34. Hair curling iron – 90 W
35. Ceiling fan – 75 W
36. Humidifier – 75 W
37. Incandescent lamp (60-watt) – 60 W
38. Stereo system - 60 W
39. Laptop – 50 W
40. Printer – 45 W
41. Digital Video Recorder (DVR) – 33 W
42. Aquarium – 30 W
43. Cable box - 20 W
44. Compact Fluorescent Lamp(energy saving
lamp), equivalent to a 60-watt lamp - 18 W
45. DVD player – 17 W
46. ​​Satellite dish – 15 W
47. VCR - 11 W
48. Clock Radio – 10 W
49. Portable stereo system (boombox) – 7 W
50. Wireless Wi-Fi router – 7 W
51. Mobile phone charger – 4 W
52. Cordless phone - 3 W
53. Answering machine – 1 W

The total power of household appliances is 47,782 W or 47.782 kW.

Given these data, 1000 watt-hours (or 1 kilowatt-hour) is enough to:

1. Receive 60,000 messages to your answering machine
2. Open 7200 cans with an electric can opener
3. Listen to 2143 songs on your portable
stereo tape recorder
4. Print 1333 pages on the printer
5. Prepare 400 cocktails in a blender
6. Knead 300 portions of dough with a mixer
7. Charge mobile phone 278 times
8. Listen to 250 songs through the stereo system
9. Make 100 toasts in the toaster oven
10. Create 67 hairstyles using a hair curler
11. Cook 36 croutons in the toaster
12. Talk on the phone for 15 days
13. Use wireless
Wi-Fi router 6 days
14. Use clock radio 4 days
15. Record 45 movies on a VCR
16. Use satellite dish for 67 hours
17. Watch 29 movies on your DVD player
18. Use energy saving light bulb 56 hours
19. Use the cable box for 50 hours
20. Use the aquarium for 33 hours
21. Use a digital video recorder (DVR) for 30 hours
22. Use a laptop for 20 hours
23. Use a 60-watt incandescent lamp for 17 hours
24. Use a humidifier for 13 hours
25. Use the ceiling fan for 13 hours
26. Use an electric blanket 1 night
27. Use a portable fan for 10 hours

28. Use a computer (system unit) for 8 hours
29. Use the monitor for 7 hours
30. Watch 13 episodes of a sitcom on a CRT TV
31. Watch 9 episodes of a sitcom on an LCD TV
32. Use the refrigerator for 5 hours
33. Use a game console for 5 hours
34. Use a dehumidifier for 3 hours
35. Watch 6 episodes of a sitcom
on a plasma TV
36. Use freezer for 4 hours
37. Heat 13 dishes in the microwave
38. Make espresso using
espresso machines 11 times
39. Iron 5 shirts
40. Create 4 hairstyles using a hairdryer
41. Pop 4 bags of popcorn in a popcorn maker
42. Wash clothes in the washing machine 3 times
43. Brew coffee in a coffee maker 3 times
44. Use the water heater for 2 hours
45. Cook 2 dishes on an electric stove
46. ​​Vacuum for an hour and a half
47. Use room air conditioner for 1 hour
48. Use a heater for 40 minutes
49. Bake cupcakes in the oven once
50. Use central air conditioning for 12 minutes
51. Use an electric oven for 3 minutes
52. Use the dryer for 18 minutes
(enough for 0.4 full drying cycle)
53. Use the dishwasher for 33 minutes
(enough for 0.3 machine cycles)

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1 watt [W] = 0.001 kilowatt [kW]

Initial value

Converted value

watt exawatt petawatt terawatt gigawatt megawatt kilowatt hectowatt decawatt deciwatt centiwatt milliwatt microwatt nanowatt picowatt femtowatt attowatt horsepower horsepower metric horsepower boiler horsepower electric horsepower pump horsepower horsepower (German) Brit. thermal unit (int.) per British hour. thermal unit (int.) per minute brit. thermal unit (int.) per second brit. thermal unit (thermochemical) per hour Brit. thermal unit (thermochemical) per minute brit. thermal unit (thermochemical) per second MBTU (international) per hour Thousand BTU per hour MMBTU (international) per hour Million BTU per hour refrigeration ton kilocalorie (IT) per hour kilocalorie (IT) per minute kilocalorie (IT) per minute second kilocalorie (therm.) per hour kilocalorie (therm.) per minute kilocalorie (therm.) per second calorie (interm.) per hour calorie (interm.) per minute calorie (interm.) per second calorie (therm.) per hour calorie (therm) per minute calorie (therm) per second ft lbf per hour ft lbf/minute ft lbf/second lb-ft per hour lb-ft per minute lb-ft per second erg per second kilovolt-ampere volt-ampere newton meter per second joule per second exajoule per second petajoule per second terajoule per second gigajoule per second megajoule per second kilojoule per second hectojoule per second decajoule per second decijoule per second centijoule per second millijoule per second microjoule per second nanojoule per second picojoule per second femtojoule per second attojoule per second joule per hour joule per minute kilojoule per hour kilojoule per minute Planck power

More about power

General information

In physics, power is the ratio of work to the time during which it is performed. Mechanical work is quantitative characteristic action of force F on a body, as a result of which it moves a distance s. Power can also be defined as the rate at which energy is transferred. In other words, power is an indicator of the machine's performance. By measuring power, you can understand how much work is done and at what speed.

Power units

Power is measured in joules per second, or watts. Along with watts, they are also used horsepower. Before the invention of the steam engine, the power of engines was not measured, and, accordingly, there were no generally accepted units of power. When the steam engine began to be used in mines, engineer and inventor James Watt began improving it. To prove that his improvements made the steam engine more efficient, he compared its power to the performance of horses, since horses have been used by people for centuries. for long years, and many could easily imagine how much work a horse could do in a certain amount of time. In addition, not all mines used steam engines. On those where they were used, Watt compared the power of the old and new models of the steam engine with the power of one horse, that is, with one horsepower. Watt determined this value experimentally by observing the work of draft horses at a mill. According to his measurements, one horsepower is 746 watts. Now it is believed that this figure is exaggerated, and the horse cannot work in this mode for a long time, but they did not change the unit. Power can be used as a measure of productivity because as power increases, the amount of work done per unit of time increases. Many people realized that it was convenient to have a standardized unit of power, so horsepower became very popular. It began to be used in measuring the power of other devices, especially vehicles. Although watts have been around for almost as long as horsepower, horsepower is more commonly used in the automotive industry, and many consumers are more familiar with horsepower when it comes to power ratings for a car engine.

Power of household electrical appliances

Household electrical appliances usually have a wattage rating. Some fixtures limit the wattage of the bulbs they can use, such as no more than 60 watts. This is done because the lamps are more high power generate a lot of heat and the lamp and socket may be damaged. And the lamp itself high temperature It will not last long in the lamp. This is mainly a problem with incandescent lamps. LED, fluorescent and other lamps typically operate at lower wattages for the same brightness and, if used in fixtures designed for incandescent bulbs, wattage is not an issue.

The greater the power of an electrical appliance, the higher the energy consumption and the cost of using the device. Therefore, manufacturers are constantly improving electrical appliances and lamps. The luminous flux of lamps, measured in lumens, depends on the power, but also on the type of lamp. The greater the luminous flux of a lamp, the brighter its light appears. For people, it is the high brightness that is important, and not the power consumed by the llama, so in Lately Alternatives to incandescent lamps are becoming increasingly popular. Below are examples of types of lamps, their power and the luminous flux they create.

• 450 lumens:
• Incandescent: 40 watt
• CFL: 9–13 watts
• LED lamp: 4–9 watts
• 800 lumens:



• Incandescent: 60 watt
• CFL: 13–15 watts
• LED lamp: 10–15 watts
• 1600 lumens:
• Incandescent: 100 watt
• CFL: 23–30 watts
• LED lamp: 16–20 watts

From these examples it is obvious that with the same luminous flux created, LED lamps consume the least amount of electricity and are more economical compared to incandescent lamps. At the time of writing this article (2013), the price of LED lamps is many times higher than the price of incandescent lamps. Despite this, some countries have banned or are planning to ban the sale of incandescent lamps due to their high power.

The power of household electrical appliances may vary depending on the manufacturer, and is not always the same during operation of the appliance. Below are the approximate wattages of some household appliances.



• Household air conditioners for cooling a residential building, split system: 20–40 kilowatts
• Monoblock 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 kettles: 1–2 kilowatts
• Microwave ovens: 0.65–1.2 kilowatts
• Refrigerators: 0.25–1 kilowatt
• Toasters: 0.7–0.9 kilowatts

Power in sports

Performance can be assessed using power not only for machines, but also for people and animals. For example, the power with which a basketball player throws a ball is calculated by measuring the force she applies to the ball, the distance the ball travels, and the time over which that force is applied. There are websites that allow you to calculate work and power during physical exercise. The user selects the type of exercise, enters height, weight, duration of exercise, after which the program calculates the power. For example, according to one of these calculators, the power of a person 170 centimeters tall and weighing 70 kilograms, who did 50 push-ups in 10 minutes, is 39.5 watts. Athletes sometimes use devices to measure the power at which muscles work during exercise. This information helps determine how effective their chosen exercise program is.

Dynamometers

To measure power, special devices are used - dynamometers. They can also measure torque and force. Dynamometers are used in various industries, from technology to medicine. For example, they can be used to determine the power of a car engine. There are several main types of dynamometers used to measure vehicle power. In order to determine engine power using dynamometers alone, it is necessary to remove the engine from the car and attach it to the dynamometer. In other dynamometers, the force for measurement is transmitted directly from the car wheel. In this case, the car's engine through the transmission drives the wheels, which, in turn, rotate the rollers of the dynamometer, which measures engine power under various road conditions.

Dynamometers are also used in sports and medicine. The most common type of dynamometer for these purposes is isokinetic. Typically this is a sports trainer with sensors connected to a computer. These sensors measure strength and power of the entire body or specific muscle groups. The dynamometer can be programmed to issue signals and warnings if the power exceeds a certain value. This is especially important for people with injuries during the rehabilitation period, when it is necessary not to overload the body.

According to some provisions of the theory of sports, the greatest sports development occurs under a certain load, individual for each athlete. If the load is not heavy enough, the athlete gets used to it and does not develop his abilities. If, on the contrary, it is too heavy, then the results deteriorate due to overload of the body. Exercise stress during some exercises such as cycling or swimming depends on many factors environment such as road conditions or wind. Such a load is difficult to measure, but you can find out with what power the body counteracts this load, and then change the exercise regimen, depending on the desired load.

Do you find it difficult to translate units of measurement from one language to another? Colleagues are ready to help you. Post a question in TCTerms and within a few minutes you will receive an answer.

On household appliances (mixer, hair dryer, blender), manufacturers write the power consumption in watts, on devices that require large amounts of electrical load (electric stove, vacuum cleaner, water heater), in kilowatts. And on sockets or circuit breakers through which devices are connected to the network, it is customary to indicate the current strength in amperes. To understand whether the outlet will support the device you are connecting, you need to know how to convert amps to watts.

Power units

Converting watts to amperes and vice versa is a relative concept, because it different units measurements. Amperes are a physical quantity of electric current, that is, the speed at which electricity flows through a cable. Watt is the amount of electrical power, or the rate of electricity consumption. But such a translation is necessary in order to calculate whether the value of the current corresponds to the value of its power.

Converting amperes to watts and kilowatts

Knowing how to calculate the correspondence between amperes and watts is necessary in order to determine which device can withstand the power of connected consumers. Such devices include protective equipment or switching equipment.

Before choosing which circuit breaker or residual current device (RCD) to install, you need to calculate the power consumption of all connected devices (iron, lamps, washing machine, computer, etc.). Or, on the contrary, knowing the cost of a circuit breaker or protective shutdown device, determine which equipment will withstand the load and which will not.

To convert amperes to kilowatts and vice versa, there is a formula: I=P/U, where I are amperes, P are watts, U are volts. Volts are the mains voltage. In residential premises, a single-phase network is used - 220 V. In production, for connection industrial equipment a three-phase electrical network operates, the value of which is 380 V. Based on this formula, knowing the amperes, you can calculate the correspondence to watts and vice versa - convert watts to amperes.

Situation: There is a circuit breaker. Technical parameters: rated current 25 A, 1-pole. You need to calculate what wattage of devices the machine can withstand.

The easiest way is to enter technical data into a calculator and calculate the power. You can also use the formula I=P/U, it will turn out: 25 A=x W/220 V.

x W=5500 W.

To convert watts to kilowatts, you need to know the following measures power in watt:

• 1000 W = 1 kW,
• 1000 000 W = 1000 kW = MW,
• 1000,000,000 W = 1,000 MW = 1,000,000 kW, etc.

This means 5500 W = 5.5 kW. Answer: a machine with a rated current of 25 A can withstand the load of all devices with a total power of 5.5 kW, no more.

Apply a formula with voltage and current data in order to select the type of cable based on power and current. The table shows the current correspondence to the wire cross-section:

How to convert watt to ampere

You need to convert watts to amperes in a situation where you need to install a protective device and you need to choose what rated current it should have. It is clear from the operating instructions how many watts a household appliance connected to a single-phase network consumes.

The task is to calculate how many amperes in watts or what kind of socket to connect to if the microwave oven consumes 1.5 kW. For ease of calculation, it is better to convert kilowatts into watts: 1.5 kW = 1500W. We substitute the values ​​into the formula and get: 1500W / 220V = 6.81 A. We round the values ​​up and get 1500 W in terms of amperes - microwave current consumption is at least 7 A.

If you connect several devices simultaneously to one protection device, then in order to calculate how many amperes there are in watts, you need to add all the consumption values ​​together. For example, a room uses lighting with LED lamps 10 pieces. 6W, iron 2kW and TV 30W. First, all indicators need to be converted into watts, it turns out:

• lamps 6*10= 60 W,
• iron 2 kW=2000 W,
• TV 30 W.

60+2000+30=2090 W.

Now you can convert amperes to watts; to do this, substitute the values ​​into the formula 2090/220 V = 9.5 A ~ 10A. Answer: current consumption is about 10A.

You need to know how to convert amps to watts without a calculator. The table shows the correspondence between the rate of electricity consumption and the current strength for single-phase and three-phase networks.

When designing electrical systems, it is necessary to competently operate with quantities such as Amperes, Watts and Volts. In addition, you need to be able to correctly calculate their ratio when loading a particular mechanism. Yes, of course, there are systems in which the voltage is fixed, for example, a home network. However, we must not forget that current strength and power are still different concepts, so you need to know exactly how many watts 1 Ampere contains.

Is there a difference between Volts and Watts?

First, let's remember what these concepts mean. Let’s also try to find out if there is a significant difference between them.

So, an electrical voltage that produces a current whose strength is equal to 1 Ampere is called a Volt. It is worth noting that it “works” in a conductor with a resistance of 1 ohm.

Volts can be divided:

• 1,000,000 microvolts
• 1,000 millivolts

At the same time, we can say that Watt is the constant power of electric current. At a voltage of 1 Volt, its power is 1 Ampere.

Based on the above, we can safely say that there is still a difference between these concepts. Therefore, it must be taken into account when working with various electrical systems.

What is Ampere?

Next, let's try to understand this concept. First of all, it is worth noting that Ampere (A) is the current strength that is considered constant. However, her distinctive feature is that after interacting with a solution of acid-nitrogen silver, it deposits 0.00111800 g of silver every second.

There is a generally accepted division according to which 1 A contains:

1. 1,000,000 microamps
2. 1,000 milliamps

How many volts does 1 ampere contain?

It is quite difficult to answer this question. However, to make it easier for you to understand this issue, we suggest that you familiarize yourself with the tables of ratios:

For DC:

For AC:

What are Volt Amperes and how to convert them to Watts?

Another unit of measurement of power adopted in SI is Volt-ampere (VA). It is equal to the product of such effective values ​​as current and voltage.

Additionally, it is worth noting that, as a rule, VAs are used solely to estimate the power in AC connections. That is, in cases where Watt and Volt-Ampere have different meanings.

There are now many different online calculators that allow you to quickly and easily convert VA to Watts. This procedure is so simple that we will not dwell on it.

But, especially for those people who do not have an online calculator at hand to convert Volt-Amps to Watts, we consider the translation process these quantities in more detail:

Using this formula we can find out the current strength. Of course, only if we already voltage and power are known.

That is, it turns out that to convert Watts to Amperes, we must find out the voltage in the system. For example, in the USA the voltage in the electrical network is 120V, and in Russia it is 220V.

It is worth noting that batteries used in cars usually have a voltage of 12 V. And the voltage in small batteries used for various portable devices, as a rule, does not exceed 1.5 V.

Thus, we can say that knowing the voltage and power, we can easily find out the current strength as well. To do this we only need the right use the above formula.

Let's look at how this "works" on specific example: if the voltage is 220V and the power is 220W, then the current will be 220/220 or 1 A.

How many watts are in 1 ampere?

Now let's try to convert Watts to Amps. And for this we need one more formula:

In it, I is A, P is Watt, and U is Volt.

By making a simple calculation using this formula, we can find out how many Watts are in one A.

As we said earlier, there is another way to calculate how many watts are in 1 A. In order to use it you will need open online calculator and enter the power consumption as well as the voltage into it.

Next, you just need to click on the button labeled “calculate” and within a couple of seconds a special program will give you correct value. By using this method, you will undoubtedly be able to save your time and effort, since you do not have to independently calculate all the indicators using formulas.

Electrical systems often require complex analysis when designing, because you need to operate with many different quantities, watts, volts, amperes, etc. In this case, it is precisely necessary to calculate their ratio at a certain load on the mechanism. In some systems, the voltage is fixed, for example, in a home network, but power and current mean different concepts, although they are interchangeable quantities.

Online calculator for calculating watts to amperes

To obtain the result, be sure to indicate the voltage and power consumption.

In such cases, it is very important to have an assistant in order to accurately convert the wattage into amperes at a constant voltage value.

An online calculator will help us convert amperes to watts. Before using an online program to calculate values, you need to have an idea of ​​the meaning of the required data.

1. Power is the rate at which energy is consumed. For example, a 100 W light bulb uses energy - 100 joules per second.
2. Ampere is a measurement of electric current, determined in coulombs and shows the number of electrons that passed through a certain cross-section of a conductor in a specified time.
3. The voltage of an electric current is measured in volts.

To convert watts to amperes, the calculator is used very simply, the user must enter the voltage indicator (V) in the indicated columns, then the power consumption of the unit (W) and click the calculate button. After a few seconds the program will show exact result current in amperes. Formula for how many watts in ampere

Attention: if the quantity indicator has a fractional number, then it must be entered into the system using a period, not a comma. Thus, the power calculator allows you to convert watts into amperes in a matter of time, you don’t need to write out complex formulas and think about their calculation.

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