Power Requirement Calculator

One of the more difficult things to do is figure out exactly how much power your home uses. You need to know this in order to buy the right size inverter. This tool will help give you a good estimate of how much power your home uses.

Appliance Max Wattage Nominal Wattage Items In Use Hours Use
per day
(Av Each Item)
Calculated
Kwhrs/day
Desk Top Computer 150 150
Lap Top Computer 40 40
Home Computer Network 20 20
Small TV 50 50
Large TV 150 150
Small Music Centre 50 50
Large Music Centre 150 150
Small Low Energy Bulbs 10 10
Medium Low Energy Bulbs 15 15
Large Low Energy Bulbs 20 20
Clothes Iron 1000 300
Toaster 1000 1000
Microwave Oven 1200 1200
Small Fridge 150 22
Medium Fridge Freezer 250 35
Small A/C 1000 1000
Small Swimming Pool 750 750
Medium Swimming Pool 1500 1500
Ceiling Fan - Low Speed 20 20
Ceiling Fan - High Speed 40 40
Appliance Max Wattage Kwhrs per
Wash
Items In Use No. Washes
per Week
Calculated
Average
Kwhrs/day
Clothes Washer - Cold Wash 250 0.25
Clothes Washer - Warm Wash 2250 0.5
Total KwHrs/day

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Comments

Thanks! I'll add those

Thanks! I'll add those options in ASAP.

Andrew

missing items.

Hi, Based on our lifestyle in Europe, your power requirement calculator has some items missing:- Literally millions of homes here have Gas fired central heating systems, burning natural gas from the North Sea (a quite stupidly, from Russia). They use 40 to 80 watt circulation pumps that run for many hours a day in the colder months. Electricallly heated floor elements can range from 200 watts for a small lobby to say 1200 watts for a larger room. They are more efficient if placed on more underfloor insulation but many people retrospectively install them over older floor screeds with no insulation at all! In colder Scandinavian countries, tens of thousands of car engines are preheated for 2 to 4 hours every winter morning by a 400 watt mains electric element installed in the waterways in the block. Hope this helps. Mike

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