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What is one unit of electricity?
The various electrical equipments used in our houses consume various amount of electricity. The power of electric equipments are measured in ‘watts’.
One unit of electricity will be consumed when 1000 watts of an electric equipment / total of 1000 watts by various equipments is used for one hour.
To calculate our monthly /bi-monthly consumption of electricity we must know the power of various electric equipment we use in our houses.
The following are the power of various electric equipments:
Lamps (Bulbs)- 60 watts
Lamps (CFL)- 15 watts
Tube Lights- 40 watts
Electric iron box- 750 watts
Immersion heater- 1000 watts
Water heater/Geyser-2 000 watts
Instant Geyser- 3000 watts-
Refrigerator (165 liters )-150 watts
Window air -conditioner -( 1.5 ton) -2650 watts
Room cooler ( medium)- 200 watts
Table fan/ceiling fan- 75 watts
Exhaust fan- 150 watts
Washing machine- 400 watts
Television- 100 watts
Mixer- 500 watts
Wet Grinder- 300 watts
Microwave oven- 1200 watts
Computer- 200 watts
Mosqutio Repeller -9 watts
Pump motor (1 HP) -740 watts
Mobile /Battery Charger- 7 watts
Let us now take an example as below:-
In a house, let us say, the following electrical equipments are used:
- 4 tube lights (used daily for 6 hours)-(4x40x6x30)/1000=28.8 units
- 4 bulbs (used daily for 2 hours)-(4x60x2x30)/1000=14.4 units
- 4 fans(used daily for 15 hours)(4x75x15x30)/1000=135 units
- 1 Television(used for 12 hours)(1x100x12x30)/1000= 36 units
- 1 Refrigerator( used for 24 hours)(1x150x24x30)=108 units
Total Consumption of electricity will be 322 units/320 units for 1 month and 640 units bimonthly.
If and when Air Conditioner/s, Pump-Motors, Washing Machines are in regular use in a house, the consumption of electricity will be high and the EB bill will also be very high,in view of the increased rate per unit for higher slabs of use of units.