Power consumption calculator2/24/2023 ![]() ![]() You also have the option of calculating it individually. Multiply the daily kWh usage with the 30 days to estimate your appliances’ monthly usage.ĭaily Total Appliances’ Usage (kWh) x 30 (Days) = Estimated Monthly Usage in kWh/Month Calculating the Power Your Usage in a Month Let’s multiply by 30 days to simulate an average month. Now that you know how many kilowatt-hours the appliance uses per day, you can estimate that usage over a month. In the example above, 120-watt TV run for 5-hours per day can consume: (Appliance’s Wattage (watts) x Hours Used/Day) / 1000 (Wh/kWh) = Appliance’s Wattage in kWh Total Appliance Power Usage (Wh) / 1000 (Wh/kWh) = Total Appliance Power Usage in kWh ![]() That means you will need to divide the answer above by 1000 to get it in Kilowatt-hour/day. Remember power consumption is calculated in kilowatt-hour, not watt-hour. The answer you get here is the watts-hours it consumes a day.Īppliance’s Wattage (watts) x Hours Used/Day = Watt-hours (Wh)/DayĮxample: Suppose you use your 120-watt TV for 5-hours per day, its power consumption in watts-hour/day would be:ĭo the same to all your appliances and add all the power consumptions (watt-hour/day) to get the total electrical appliance power consumption. It’s pretty simple all you need is to multiply the wattage rating of the device by the hours you usually use it per day. You want to start by finding out how many watts each of your electrical appliances uses in a day. Calculating the Kilowatt-Hour (kWh) Usage That’s because they have the starting power draw, about three times their smooth-running power draw. Remember: when measuring the current the appliance draws, you may notice some electrical appliances have a high amp draw when starting and reduce significantly when it stabilizes. There is also the option of using a clamp-on ammeter, an electrical tool that you clamp on one wire on the appliance and measure the current that flows through it. If nothing there, try contacting them and ask for these details. If it’s not available, you can visit the manufacturer’s website, search for the item and check its specs. If the information isn’t available on the devices, try finding it on the appliance’s manual, assuming you still have it. Once you have the voltage and the amps, you can multiply the two to get the watts required to start the appliance. ![]() Check the same sticker you checked earlier for this information. Some commercial electrical appliances run on 480-volt and above. Most household appliances run on either 120-volt or 240-volt. But you can still get it by multiplying the number of amps the appliance draws by the voltage it runs at. Sometimes the manufacturer won’t list the wattage on the sticker, tag, or stamp. So, the stated wattage won’t be able to determine the exact energy consumed by the unit.ĭo Some Calculations by Multiplying Amperage by Voltage What’s more, some appliances have multiple settings that affect the amount of power they consume. Some electrical devices also have the rated wattage that they consume continuously, typically half or a third of the starting wattage. The wattage listed here is the maximum or the starting power the appliance will draw as it starts. Most electrical appliances come stamped on their back or bottom with specific specs, including the power rating, voltage, and other specifications. When finding out the individual power consumption of your electrical appliances, you want to list all devices you have and use these three methods to find their wattages:Ĭheck a Stamped or Tag on the Back or Bottom of Your Appliance ![]() That means when calculating the amount of wattage your electrical appliances consume, the start point is finding out their wattage ratings. Power consumption is calculated using kWh, which is kilowatt per hour. Finding Out the Power Consumption of Your Electrical Appliances Individually Wondering how much power you consume in a month? Do you want to know how your power company arrives at the amount you get at the end of the month? Well! Everything is simplified for you in this electrical appliance power consumption calculator. ![]()
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