I have already prepared a excel sheel for verifying our meter reading. We will check in that which is working or not. As you can see duration is mentioned in upper most shell. In duration firstly you have to decide for how long you are using your electrical appliances . We can select whatever but my recomendation is to choose 6-8 hours because within this limit there is a less posibility of error. As we took smaller time span the calculation will be more accurate. If we have big duration then there is a high chances of error. For my calculation i am choosing here 9 am to 5 pm then our duration is of 8 hours . My personal advise is to choose as smaller time we can take. Here it is written initial reading . It means as we started checking our meter , mention reading value of that time only . Let suppose our initial reading is 12123.4 and we take final reading at 5 pm . Here you can see a table , at left side corner there is a serial number. Next one is a electrical appliances . In electrical appliances you have to mention list of devices you have used in selected duration. Next one is watt. Basically watt represents power consumptions of devices. Next one is quantity, duration. In duration , you have to be carefull about its unit i.e hours. Lets suppose we switch on a fan , we used it for half an hour then we have to convert 30 minutes into hours. Everything that we have used in minutes we need to convert it into hours. For converting into hours you have to divide by 60. last one is total energy consumption it means how much energy we used which is basically the product of watt , quantity and duration. Lets check our meter . Lets suppose we turn on our led bulb at 9 am . Its power consumption is 14 watt . Quantity is 2 . We are using it for whole day i.e. 8 hours. Here we are using it for whole day. By the way we don't have to use to a whole day. We need to be carefull about our electrical consumption in order to save electricity . Then after we use tubelight . Its power consumption is of 22 watts , quantity is 1 and we are using it for 4 hours. Here you can obsereve that all the calculation automatically taking place. All the formula is already applied you need not to worry about calculation. After that we made our food on induction cookware. Here its power consumption is 1200 watt , quantity 1 and we take 1 hour for preparing our food. Next we washed our clothes in washing machine, its watt is 500 , single quantity and duration lets suppose half an hour i.e. 0.5 . Next we switch on our fan it is of 60 watts , 2 numbers of quantity and we use it for 4 hours. In parallel, we watched TV i.e LED TV of 32 inches and power consumption 22 watts , single quantity and we watched TV for 4 hours. This is just a general calculation here you get total energy consumption in watt hours i.e. 2330. This value is in watt hour , we need to convert it into kilo watt hour. To convert it we need to divide this value by 1000 . Here i already used formula and divided it by 1000. You get 2.33 . This is total energy consumption for 8 hours. In starting our reading was 12123.4 and after that we utilize 2.33 unit more. So, our new electrical meter reading will be 12125.73 . At this time we again go to our meter and check what exact reading is coming out at 5 pm. Lets suppose our reading is coming 12126.2 . Then we will match actual reading that we got from meter and our calculated reading then we find the differences. Here its coming 0.47 . As we already applied the formula in our sheet , it showing our meter works properly. If our final reading 12126.9 . Then our difference will be 1.17 . We conclude it just by saying if the differnce between final reading and calculated reading is more than 1 unit then our meter is not working properly. For making accurate calcualtion , we need to be very carefull about our appliances wattage consumption and its operating duration. If you are not aware of any power consumption , i already made a power comsumption chart . In this there are 36 appliances mention with its power capacity. This will help you to get an idea about your appliances consumption. I hope you like this video and please like and subscribe our channel and click on the bell button for more updates.