How Much Do You Spend on Electricity? Buyfast helps you to find out...

Posted by Felix Wu on

Attacking your monthly bill
How much energy do my household appliances use? Which appliance consumes the most energy? Why is the electricity bill so high and how do I reduce it? These are the most common enquires made by consumers. Your inquiries can only be answered with a list of your power ratings.
Using Ohm’s Law of power consumption, here’s an example on how to calculate a 52 LCD TV
Most appliances will only provide you with Watts and Voltage. Then you would have to calculate the strength of the electric current which is your Amperage (I).
The formula is I = W / V
                =180/120
                =1.5I
 
APPLIANCE                           WATTS      AMPs           VOLTAGE
LED Light Bulb               12W              0.54              220V
52 inch LED TV               300W            1.25              240V
DVD Player                      120        0.83              10
DSTV Decoder (HD PVR P2)       40          3.34              12V
 
Power is the rate at which energy is absorbed at one joule per second. It is measured in Watts and usually abbreviated (W). 
Voltage is the electric potential energy. Measured in Volts (V) or (E),
Amperage or Current is the magnitude of the electric current flowing through an electric appliance. Measured in Amperes/ Amps (I).
 
Please note that appliances such as televisions, computers or kitchen appliances still draw a small amount of power when they are on standby or switched off. This will increase the appliances energy consumption a few watt-hours. To avoid this it is best to turn the power trip off or rather unplug unused appliances.

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