Table 4 Electric appliances and their hours of usage of a 12-unit classroom block
Appliance | Power rating (W) | Quantity | Hours/day | Period of use |
|---|---|---|---|---|
Bulb | 15 | 10 | 12 | 6Â pm to 6 am |
Fridge | 265 | 1 | 8 | 7 am to 3Â pm |
Television | 250 | 4 | 5 | 10 am to 3Â pm |
Mobile phone | 10 | 20 | 2 | 10 am to 12Â pm |
Fan | 75 | 4 | 6 | 9 am to 3Â pm |
Computer | 350 | 40 | 5 | 8 am to 1Â pm |