ReliabilityDesign

How to Calculate the Electrical Consumption of a House

  • author : Had MAJ
  • reading time : 4 minutes
  • date : Thursday, February 1, 2024

Calculating a House’s Electrical Consumption

Calculating a home’s electricity usage requires taking into account a variety of elements and household equipment. The following is a general approach to calculating the house’s usage. Based on this computation, you may request an assessment of your consumption from the regional electric distributor. Normally, in every nation and for each local electrical distributor, there are certain rules from which to pick. If, at the conclusion of the calculation, your consumption does not fall within their normal range, you should consider a range one step higher than your calculated.

Identify Appliances and Devices:

Create a list of your appliances, such as:

Kitchen appliances:

  • Refrigerator
  • Electric or gas oven
  • Microwave
  • Dishwasher
  • Coffee maker
  • Toaster
  • Blender
  • Food processor

Laundry appliances:

  • Washing machine
  • Dryer
  • Iron

Entertainment and Electronics:

  • TV
  • Computer/laptop
  • DVD/Blu-ray player
  • Home theater system
  • Gaming console

Heating and cooling:

  • Air conditioner
  • Heater
  • Fans

Lighting:

  • Light bulbs
  • Lamps
  • Ceiling fans with lights

Bathroom appliances:

  • Hair dryer
  • Electric shaver

Cleaning appliances:

  • Vacuum cleaner
  • Electric broom

Home Office:

  • Printer
  • Scanner
  • Office equipment (such as PCs and monitors)

Smart Home Devices:

  • Smart Thermostat
  • Smart Speakers
  • Smart Lighting Systems
  • Smart Security Systems

Miscellaneous:

  • Electric clocks
  • Razors
  • Toothbrushes
  • Electric blankets
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Notes :

As you can see, there’s a chance that you won’t use all of these appliances at the same time. Consider for a second how many of them may be operational at the same time in the worst-case situation.

Consequently, while determining the aggregate consumption, it is critical to choose the appropriate coefficient. You may pay more to the local distributor for your demand and oversize the fusing and cabling if you assume that this coefficient will be around 100%.

However, if you underestimate this coefficient, you run the risk of tripping the fuse when running at full load, particularly on weekends or other high-usage periods when high-consumption appliances like dishwashers, washing machines, dryers, hair dryers, and water boilers are used simultaneously.

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