Sizing Gensets

Know your electricity consumption and help saving electricity

The table below tells you how much energy you consume through various devices. You can save a lot of energy for the nation and cut your electricity bills by switching off the devices which are not required.

Some Ready Calculations

Device (Capacity & Size) Wattage Monthly Electricity Consumption (kWh) One Unit od power will be consumed when you run the device for…
One hour/day Six hours/day
Bulb 25 0.75 4.5 40 hrs.
40 1.2 7.2 25 hrs.
60 1.8 10.8 16 hrs. 40 min
100 3 18 10 hrs
CFL 5 watt
7 0.21 1.26 143 hrs.
9 watt 11 0.33 1.98 90 hrs
11 watt 13 0.39 2.34 77 hrs.
25 watt 27 0.81 4.86 37 hrs.
Fluorocent

Tube Lights 48″
with Copper choke 55 1.65 9.9 18 hrs. 11 min.
with Electronic choke 35 1.05 6.3 28 hrs. 11 min.
Night Lamp 15 0.45 2.7 66 hrs. 40 min.
Ceiling fan 36/48″ 50 1.5 9 20 hrs.
56″ 60 1.8 10.8 16 hrs. 40 min.
60″ 71 2.1 12.6 14 hrs. 17 min.
Table Fan 12″ / 16″ 40 1.2 7.2 25 hrs.
Electric Iron Domestic 45./700 13.5 to 21 81 to 126 2 hrs. 13 min to 1 hr. 25 min.
Dhobi 1000 30 180 1 hr.
Immersion Iron 1000 30 180 1 hr.
Geyser Storage 15-50 lit 2000 60 360 30 min.
Instant 3000 90 540 20 min.
AC 1 ton 1400 42 252 43 min.
1.5 ton 1800 54 324 33 min.
Air Cooler 170 5.1 30.6 5 hrs. 53 min.
Refrigerator Small 225 2 unit/day
Big 300 4 unit/day
Toaster 800 24 114 1 hrs. 15 min.
Hot Plate 1000/1500 30 to 45 180 to 360 1 hr. to 40 min.
Elecric Kettle 1000/2000 30 to 60 180 to 360 1 hr. to 30 min.
Mixer-Juicer (Big) 450 13.5 81 2 hrs. 13 min.
Washing Machine Automatic 325/1000 3 hrs. 5 min. to 5 hrs.
Semi-Autometic 200 6 36 5 hrs.
Vacuum Cleaner 700-750 21 to 22.5 126 to 135 10 hrs. 26 min. to 1 hr. 20 min.
Radio 15 0.45 2.7 66 hrs . 40 min.
Tape Recorder 20 0.6 3.6 50 hrs.
TV 60 to 120 1.8 to 3.6 10.8 to 21.6 16 hrs. 40 min. to 8hr. 20 min.
Video 40 1.2 7.2 25 hrs.
Mosquito Repellant 5 0.15 0.9 200 hrs.
Water Purifier 25 0.75 4.5 40 hrs.
Computer 100 to 150 3 to 4.5 18 to 27 10 hrs to 6 hrs. 40
min.

Use Genset Sizing Calculator to identify the Generator size suitable for you.