Watts to Amp – Conversion, equation, table, convert and calculator free.

Watts to Amp – Conversion, equation, table, convert and calculator free.
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With this calculator you can convert from Watts to Amp easily, quickly and free any electric power, the calculation takes into account the power factor.

The calculation takes into account the power factor of the electrical system and give the most common values.

We also show the formula that is used for the conversion and a table with the main conversions from Watts to Amp.


More information on converting from Watts to Amp:


Definition P.F, Amperes and P (Watts):

Watts: is Working Power (also called Actual Power or Active Power or Real Power). It is the power that actually powers the equipment and performs useful work.

The real power in watts is the power that performs work or generates heat. Power in watts is the rate at which energy is consumed (or generated). One watt is one joule (energy) per second (1 W = 1 J/s).

Resistive devices or loads such as heaters, incandescent lamps are rated in Watts.

Ampere: Amperage is a term often used by electricians, and means electrical current, measured in amperes, or amps. The ampere is the SI unit for electrical current, or the amount of electrical charge that flows through a conductor in a given time. One ampere is a charge of one coulomb — about 6.241 X 1018 electrons — per second flowing past a given point.

P.F: Power factor is the ratio of working power to apparent power. It measures how effectively electrical power is being used. A high power factor signals efficient utilization of electrical power, while a low power factor indicates poor utilization of electrical power.

Power Factor is the cosine of the phase angle between current and voltage.
Power Factor is the ratio of true power to apparent power.

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Watts to Amp calculation formula:formula from convert of watts to amp 

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Typical Un-improved Power Factor by Industry:

Industry Power Factor
Auto Parts 0.75-0.80
Brewery 0.75-0.80
Cement 0.80-0.85
Chemical 0.65-0.75
Coal Mine 0.65-0.80
Clothing 0.35-0.60
Electroplating 0.65-0.70
Foundry 0.75-0.80
Forging 0.70-0.80
Hospital 0.75-0.80
Machine Manufacturing 0.60-0.65
Metalworking  0.65-0.70
Office Building 0.80-0.90
Oil field Pumping 0.40-0.60
Paint Manufacturing 0.65-0.70
Plastic 0.75-0.80
Stamping 0.60-0.70
Steel Works 0.65-0.80
Tool, dies, jigs industry 0.65-0.75

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Typical power factor of common household electronics:

Electronics device Power Factor
Magnavox Projection TV – standby 0,37
Samsung 70″ 3D Bluray 0,48
Digital Picture Frame 0,52
ViewSonic Monitor 0,5
Dell Monitor 0,55
Magnavox Projection TV 0,58
Digital Picture Frame 0,6
Digital Picture Frame 0,62
Digital Picture Frame 0,65
Philips 52″ Projection TV 0,65
Wii 0,7
Digital Picture Frame 0,73
Xbox Kinect 0,75
Xbox 360 0,78
Microwave 0,9
Sharp Aquos 3D TV 0,95
PS3 Move 0,98
Playstation 3 0,99
Element 41″ Plasma TV 0,99
Current large, flat-screen television 0,96
Windows-mount air conditioner 0,9
Legacy CRT-Based color television 0,7
Legacy flat panel computer monitor 0,64
While-LED lighting fixture 0,61
Legacy laptop power adapter 0,55
Laser Printer 0,5
Incandescent lamps 1
Fluorescent lamps (uncompensated) 0,5
Fluorescent lamps (compensated) 0,93
Discharge lamps 0,4-0,6

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Typical Motor Power Factors:

Power Speed Power Factor
(hp) (rpm) 1/2 load 3/4 load full load
0 – 5 1800 0.72 0.82 0.84
5 – 20 1800 0.74 0.84 0.86
20 – 100 1800 0.79 0.86 0.89
100 – 300 1800 0.81 0.88 0.91

Reference // Power Factor in Electrical Energy Management-A. Bhatia, B.E.-2012
Power Factor Requirements for Electronic Loads in California- Brian Fortenbery,2014
http://www.engineeringtoolbox.com

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Watts to Amp conversion table:

Watts Phase P.f Volt Amp
1W 3P 0,8 208V 0,003A
2W 3P 0,8 208V 0,006A
3W 3P 0,8 208V 0,01A
4W 3P 0,8 208V 0,013A
5W 3P 0,8 208V 0,017A
6W 3P 0,8 208V 0,02A
7W 3P 0,8 208V 0,024A
8W 3P 0,8 208V 0,027A
9W 3P 0,8 208V 0,031A
10W 3P 0,8 208V 0,034A
20W 3P 0,85 220V 0,061A
30W 3P 0,85 220V 0,092A
40W 3P 0,85 220V 0,123A
50W 3P 0,85 220V 0,15A
60W 3P 0,85 220V 0,18A
70W 3P 0,85 220V 0,2A
80W 3P 0,85 220V 0,24A
90W 3P 0,85 220V 0,27A
100W 3P 0,85 220V 0,3A
200W 3P 0,9 440V 0,291A
300W 3P 0,9 440V 0,43A
400W 3P 0,9 440V 0,58A
500W 3P 0,9 440V 0,72A
600W 3P 0,9 440V 0,87A
700W 3P 0,9 440V 1A
800W 3P 0,9 440V 1,16A
900W 3P 0,9 440V 1,32A
1000W 3P 0,9 440V 1,4A
2000W 3P 0,95 480V 2,53A
3000W 3P 0,95 480V 3,7A
4000W 3P 0,95 480V 5A
5000W 3P 0,95 480V 6,3A
6000W 3P 0,95 480V 7,5A
7000W 3P 0,95 480V 8,8A
8000W 3P 0,95 480V 10,1A
9000W 3P 0,95 480V 11,3A
10000W 3P 0,95 480V 12,6A