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

by andrew1056 - 01/15/2010 - 11:31

Thanks! I'll add those options in ASAP.

Andrew

missing items.

by Mike (not verified) - 01/13/2010 - 03:30

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