Power Consumption of Household Devices

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Device Watts Comments
Microwave 1630W Draws more than 15 Amps of current!
Rice Cooker 620W
  • Cooking: 620W
  • Warm: 25W
Juicer 180W
  • Normal operation: 180W
  • While crushing big pieces: 250-350W
Desktop Computer 150W This rating is based on a typical desktop configuration. Here is the breakup:
Component Wattage Comments
CPU Box 100W P4, 2 hard disks
20" LCD Monitor 45W Medium brightness setting
Misc accessories 7W Modem and router
DVD Drive 4W While playing a DVD
Laptop AC adapter 20W The actual value in the given range was determined by the brightness setting of the screen and whether or not the speakers are being used.
  • If the battery is charged the range drops by 10W
  • If the screen is off the wattage drops by 2W below the range
  • Examples:
Setting Battery is charging Battery is charged
Screen is off 24W 14W
Screen brightness is set to minimum 26W 16W
Screen brightness is set to maximum 31W 21W
Speaker volume is set to maximum 32W 22W
Cellphone AC adapter 3W The power usage is while the phone is being charged.
Digital Camera battery charger 3W The power usage is while the battery is being charged.

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