Instruction

1

Start to understand what kind of value you need to take into consideration. The fact that very often in the calculation of electricity the concept of kilowatt-

**hours**and kilowatts are confusing. Although kW is power (that is, the amount consumed by the device of energy) and kilowatt-hour is the amount of time consumed per hour.2

Please note that the data on energy consumed on the electric counter indicated in kilowatts. To convert them into watts, multiply the number of kilowatt one thousand. Thus, 1 kilowatt * 1000 = 1000 watts.

3

As watt-

**hours**or kilowatt-**hours**is the amount of watts for a certain period of time, for calculations you must know for what period of time to get the figure. Divide the number of watt-hours by the number of hours for which the calculation is performed.4

For example, you know that in the past month (30 days) consumption of electricity metering devices is 72 kilowatt/hours. Multiply this figure by a thousand. To obtain the number of watts. 68,4*1000=68400 watts/hour. Now divide the resulting figure by 720. That's the number of hours in one month (30*24=720). 68400/720=95 watts. It turns out that in the course of a month constantly burning one light bulb with a power of 95 watts.

5

Remember that the data remain approximate average character, if you produce a General calculation. It is impossible to distinguish one particular appliance. This formula does not take into account the loss of energy. To calculate power watts for a single device you need to connect it to the network in a single copy, included leaving within the hour. The resulting figure will be the desired value. For example, if the network was enabled iron. Potrebu one hour 1500 watt/hour, power consumption of this device would be exactly 1500 watts.

# Advice 2: How to convert watts

When used in the calculation of such physical quantities as power, is often required to transfer

**watts**to other units. The task is complicated by the fact that the technique still used obsolete units of measurement of power, such as "horsepower". But with all of the necessary tables and formulae, translate**watts**quite easily.You will need

- calculator

Instruction

1

To put

Watt - 1

Kilo

Megawatt - 0,000001

Joules per second - 1

Horsepower 0,00134

Metric horsepower 0,00136

Electric horsepower 0,00134

Boiler horsepower 0,000102

Foot-pound per minute - a 44.25

Foot-pound per second - 0,74

dBm - 30

Calories per hour - 859,85

Kilocalories per hour is 0.86

British thermal unit per second - 0,000948

British thermal unit per hour is 3.41

A ton of refrigeration is 0,000284

**watts**in the appropriate units, use the following table.One Watt corresponds to:Millie**watts**- 1000Watt - 1

Kilo

**watts**- 0,001Megawatt - 0,000001

Joules per second - 1

Horsepower 0,00134

Metric horsepower 0,00136

Electric horsepower 0,00134

Boiler horsepower 0,000102

Foot-pound per minute - a 44.25

Foot-pound per second - 0,74

dBm - 30

Calories per hour - 859,85

Kilocalories per hour is 0.86

British thermal unit per second - 0,000948

British thermal unit per hour is 3.41

A ton of refrigeration is 0,000284

2

To translate the power, specified in watts, a different unit of measure, simply multiply the given number by that factor. For example, if the engine power output is 100,000 watts, the "horsepower" it would be: 134 HP

3

If You were asked to convert

P – power

U – voltage,

I – current,get a simple formula: I=P/220.

That is, in order to calculate the current (in amperes) must be able to withstand your mains when you connect a new device, share in his power (in watts) at 220.

**watts**to amps, you should not accuse his interlocutor of incompetence and inadequacy. Specify the conditions in which you use the appliance. If the device is connected to a household electrical outlet is screwed into electroputere, or in some other way connected to a conventional power supply, then most likely, you use a voltage of 220 Volts AC. Given that the voltage, current and power are interrelated by the formula P=UI, whereP – power

U – voltage,

I – current,get a simple formula: I=P/220.

That is, in order to calculate the current (in amperes) must be able to withstand your mains when you connect a new device, share in his power (in watts) at 220.

4

Similarly, you can transfer

Even easier to translate

**watts**to amps for any appliance, if you know the voltage supply.Even easier to translate

**watts**, using numerous programs-converters or online services, such as http://www.convertworld.com/ru/moshhnost/Ватт.html