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Watts Calculator Worksheet
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To calculate how much power you plan to use, simply estimate your daily usage of each appliance , and multiply watts- look on data plate or manual of appliance, by hours to fill the Watts-Hours column on the right. Also, you can look at estimated figures we provide under our Energy Watts/Amps Guide for estimated information about other appliances not shown here.
It is always better to obtain more precise figures by looking at the electrical specifications labels on your appliances to see how much power they consume. LIGHTS To calculate your light usage, check the wattage of your light bulbs and estimate how many lights you have on, on typical days, and for how long. EXAMPLE #1: 3 bulbs X 60W @ 4hours /day= 720W or 0.72KWh EXAMPLE #2: 25W 12V light bulb consumes 2.1amps (A=25/12V) To convert to watts: 2.1 amps X 12V= 25.20Watts/hr Also see Appliance Watts/Amps Calculator Once you have your total watt-hours, divide that number by 1000 to get your total Kilowatt hours- this is how power usage is measured by your utility grid provider. Also, you can review your current electric bill which tells you how many KWh you use each month. Be sure to compare your summer and winter months. Remember once you become a solar energy user you will, most likely, consume less power than you did previously, simply because, you will be conscious of your usage and therefore be inclined to conserve more. You will derive the most enjoyment, and make the most efficient use of your solar system, if energy hogs such as large space heaters, electric stoves, water heaters and HVAC systems are operated on propane or natural gas. Use of CFL and LED light bulbs and 12V appliances will allow your system to operate at peak efficiency. [BACK TO TOP] |
Watts Worksheet
APPLIANCE WATTS HRS/DAY WATT-HRS. Blender 300 X __________ = ___________ CD Player 120 X __________ = __________ Ceiling Fan 80 X __________ = __________ Coffee Maker 800 X __________ = __________ Computer 100 X __________ = __________ Crock Pot 200 X __________ = __________ Dishwasher 1200 X __________ = __________ Fax Machine 140 X __________ = __________ Food Processor 450 X __________ = ___________ Garbage Disposal 390 X __________ = ___________ Hair Dryer 1500 X __________ = __________ Iron 1000 X __________ = __________ Lights- Total bulbs 40W X __________ = __________ 60W X __________ = __________ 100W X __________ = __________ Microwave 1100 X __________ = __________ Mixer 150 X __________ = __________ Printer- laser 576 X __________ = __________ Refrigerator 120 X __________ = __________ Satellite Dish 60 X __________ = __________ TV 100 X __________ = __________ Toaster 1000 X __________ = __________ VCR 40 X __________ = __________ Vacuum cleaner 1100 X __________ = __________ Additional Appliances __________ = __________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ [BACK TO TOP] |
