Amps x Volts = Watts

These are base formulas used by electricians to determine power requirements.  In the US the standard is 110-120 volts, in much of the world the standard is 220 volts so the math is the same with different numbers.  There are other factors like wire length and guage that can come into play but this will be simple english.

Amps x Volts (voltage) = Watts

Here is an easy example for a 12 inch TV:
.75 amps X 120 volts = 90 watts

Read the label on your appliances or manufacturer info for the larger built-in appliances. Many things are expressed as watts which doesn’t completely tell me the answer I need so you may have to do the reverse calculation for circuit planning.  Most things tell you the watts on a label somewhere.

The TV example used to get amps would be:
90 watts / 120 volts = .75 amps

Conversion is beneficial to get a clear calculation of usage in amps and watts.  Sure it would be nice if
everyone used the same labeling then you could simply add up total electric consumption. Need a handy calulator? On your windows computer click the Start Menu>> Then Run, type “calc” in the box and press OK; to quickly popup your calculator or choose the calculator icon under accessories.

If you check your equipment you may often find something rated at 3-4 amps may have an actual draw that is much lower.  Computers are a good example. We have a 500watt power supply which calculates to 4.167amps.  We can tell you that it does not draw anywhere near that even when first powered on which on some things does actually matter.

With these 2 formulas humble non electricians can pretty much figure out the big picture without having to know about OHMS law and such.

Equipment is said to draw so many amps.  In your office most of the outlets are 15 or 20amp circuits.
This means there is a circuit overload switch that is designed to turn off if the demand exceeds 20amps.  You wife will simply say you tripped the breaker, again!
How many devices can a 20 amp circuit hold without tripping the circuit off?  This is a common question.
Use the electrical formulas here and you will have a potential amperage draw so you know how big your system will need to be in order to service your power requirements.

If you own a building and run your business you need to contact us, we are looking to help companies with success stories that increase the bottom line!

Misc. Metric Translations
English                       Metric
1 inch                       = 2.54 centimeters
1 gallon                    = 3.8 liters
1 pound                    = .45 kilograms
1 mile                       = 1.6 kilometers
1 acre (43,560sq.ft). = .4 hectares

Misc:  Why can’t the measures all be equal?  joules (1 kWh = 3600 J)… Joules is another metric measure of energy used. It compares with BTU (which natural gas is often sold in) and horsepower (Watt is a unit of the same measurement).

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