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Load Calculator

Tired of loadshedding?

Use our tool to calculate the electricity you need to cover loadshedding and buy the right back-up kit to keep your house powered up!

How to size your load requirement for load shedding

  1. Choose the items you want to be powered on the back up system
  2. Fill in the quantity of each item
  3. Fill in the wattage of each item (standard wattages are already put in as a guide)
  4. Fill in hours per day you require item to run for (it has been prepopulated with 2 hours for standard load shedding)
  5. Look at bottom for Daily requirements, this shows the KW and the KWH required to power all items selected.
  6. Match this KW to the KW of the kit i.e. if you need 2.4KW select a 3KW inverter system. We recommend selecting a system size slightly larger than your expected needs.
  7. Reference our Inverter and battery guidelines to ensure you are selecting the right kit for your needs.
  8. Remember to consult an electrician for an installation cost estimate.
    • Be sure to discuss what items need to be on the essential side for the back up system and any constraints or concerns.
  9. If unsure, send your load calculator to us for review and recommendation.
  10. Check pricing, stock availability and place order at our Magnet Store.
Item
Quantity
Watts Each
Hours per day
LIGHTING
Lights Bedroom
Lights bath room
Lights kitchen
Lights Living room
Lights dining room
Lights Outside (11w)
KITCHEN APPLIANCES
Microwave
Kettle
Washing Machine
Tumble dryer
Fridge
Coke fridge
Extractor Fan
Freezer
Toaster
Dishwasher
Iron
OTHER APPLIANCES
TV
audio visual system
Decoder
Wifi
Laptop
Ceiling Fans
Standing fans
Air Conditioners
Desktop PC
Power supplies
Passive sensors
Door sensors
Pump
Siren
TOTAL DAILY REQUIREMENTS
0 KW
0 KWH
Daily Amp Hours per Day
0 AH
    *Notes
  • This load calculation tool is designed to assist you in sizing your system. It provides an indication of the inverter and battery sizes for your specific application.
  • When completing the tool, be as accurate as possible with what items (lights, appliances, power supplies etc.) you would like powered on the system.
  • Review preloaded KW against the actual KW of the item in your home (check the back of appliances for actual KW).
  • Please bear in mind that this tool contains typical sizes of household loads, your home may vary.
  • Magnet bears no responsibility for the inputs into the load calculator, KW recommendations and kit selection.
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