Installation manual

© 2014 EcoInnovation Ltd (NZ) Page 123
12. Units and conversions
 An ampere (amp, A) is the unit of measurement of electric current produced in a circuit
by 1 volt acting through a resistance of 1 ohm.
 A current is a flow of electrons in an electrical conductor. The strength or rate of
movement of the electricity is measured in amperes.
 An ohm is the unit of measurement of electrical resistance. It is the resistance of a circuit
in which a potential difference of 1 volt produces a current of 1 ampere.
 A Watt is the electrical unit of power: that is, the rate of energy transfer equivalent to 1
ampere flowing under a pressure of 1 volt at unit power factor.
 A Watthour (Wh) is an electric energy unit of measure equal to 1 Watt of power supplied
to (or taken from) an electric circuit steadily for 1 hour.
Volts x Amps = Watts
To convert
To
Multiply by
centimeters
inches
0.3937
sq millimeters
sq inches
0.0015
Meters
feet
3.2808
miles per hour
feet per second
1.4667
Litres
gallons
0.2641
litres per second
gallons per minute
15.900
kilowatts
horsepower (electrical)
1.3405
degrees Celsius
degrees Fahrenheit
x 9/5 +32
To convert
To
Multiply by
Inches
centimeters
2.5400
Feet
meters
0.3048
feet per second
miles per hour
0.6819
Gallons
liters
3.7854
gallons per minute
liters per second
0.0631
horsepower (electrical)
kilowatts
0.7460
degrees Fahrenheit
degrees Celsius
-32 x 5/9