For accounting of expense of the electric power and charge of payment for its use it is necessary to take electric power meter readings monthly. In most cases problems to take of the meter reading, at inhabitants of owner-occupied or multifamily residential buildings do not arise.
According to rules of providing utilities, citizens have the right to take readings from own counter independently, but at the same time at least time in half a year to provide the admission of officials of management company for control and removal of indications from all-room and individual metering devices.
Taking readings from the counter independently, it is necessary to write off all digits which you see — from the first to the last digit among. In standard counters one whole revolution which is made by the calculating mechanism corresponds to ten thousand kilowatts an hour. Therefore to learn the sum of payment for the spent electric power (in most cases the rated period is equal to one month), it is necessary to learn electric power in month expense (by subtraction of indications of monthly prescription from the digits received at the end of the rated period), and then to increase the sum which has turned out as a result by tariff.
Many citizens who want to take of the meter reading independently doubt the accuracy of the measuring tool established at them in the apartment. Modern room counters have class of accuracy 2.5. Accuracy class — indicator of possible error of measuring tool. In this case the class of accuracy 2.5 means that even the serviceable room counter of the electric power can display actually consumed 100 kW as 97.5 and as - 102.5 kW. Even at some overloads the serviceable counters always work within accuracy class.
Also some citizens the fact that the disk of the counter rotates even when all electrical household appliances in the house or in the apartment are switched-off from network, including it by sign of fault of the counter worries. Actually it is worth to remember about electric calls which are established practically in each apartment today. These devices consume the electric power constantly irrespective of, someone rings door or not. Therefore slow rotation of disk should not guard you, so it is not sign of fault of the counter.