Choice, placement and connection of electricity meters according to the rules

Connecting a new device account - is the final touch installation and wiring is probably the most important point. In this article I will tell you about choosing the right location and installation of counting devices.

Getting permission

If you mount a completely new wiring in the new house, where previously stood metering device, then you may completely tie metering device without connecting to load it and after the call the representative of the management company or and sales. He will make the connection of input and oplombirovku counter.

If you decide to replace an old appliance with a new account, then before you change it, you have to invite the Comptroller, the aforesaid amount to an act and record the current reading. Only after that you have the right to disrupt and dismantle the seal-assembly. If you willfully damage the seals, then you have serious problems with Energosbyt and you will add a large fine.

Select counter

Despite all the variety of meters, the principle and algorithm of work they have one, so when choosing a metering device should be guided by the following parameters:

type mechanism

There are two types of counters: the induction and electronic. They differ only in the performance and dimensions, respectively.

Accuracy class

Meters also vary by class of accuracy in the range of from 0.5 to 2.5. But at the moment the maximum permissible error for the newly installed metering devices is 2.0%. I recommend taking just such metering devices.

peak current

Just counters are different to the rated current. And they are available in the denomination of 5-15 A to 5-100 amps. But since most homes intake rarely exceeds 50 A, and acquired the denomination counters 5-50 A.

These are the three main criteria on which and should choose the metering device. Well, we go further.

installation site

This item is most acute in particular the owners of private houses. According to the documents, the device is placed at the interface between the property management company and yours. And on its own metering device is your property. And it would be quite logical to put it in the house.

But according to the decision of the Government № 530, you as a consumer are obliged to provide access to metering devices to representatives of power supplying organization to monitor the status of the device itself, and accounting seals. But this decision does not specify a particular installation. This means that to put it in the house will not work and only the facade of the house or a separate support is standing in your territory.

But keep in mind that, according to SEP, paragraph 1.5.27 of metering devices required to be located in a dry place with a temperature below zero degrees Celsius.

One way out of this contradiction (if you do not want to confront) is to install a heating box with the counter. If you do not, then be prepared for the fact that if you choose the induction meters, then the negative temperatures it begins to incorrectly consider the mechanism (disk rotates faster) overpayment and can reach 10% of bills.

In fact, the situation is very complicated and quite delicate. It will be discussed in a separate article in full gear on the EMP and the laws of the Russian Federation, so do not miss out.

A little easier things are in the apartment owners. Their account of the instrument simply mounted on the landing.

height placement

According to requirement SEP height accommodation box varies from 0.8 to 1.7 meters, in exceptional cases, the height of the allowed 0.4 m.

Wiring single phase meter

Despite all the variety of metering devices, wiring diagram are all the same and is as follows:

Moreover, the connection is made rigid solid cable design section. If you perform the installation of flexible wire, the ends must be crimped.

Take care that during the clamping of the bare wire under the bar did not get isolation, otherwise contact will be unreliable, and in this place will be heated.

Wiring three-phase meter

If you need to connect a three-phase meters, then you will only increase the number of wires, but the principle remains unchanged.

These schemes are relevant for accounting devices direct connection.

Taking into account all of these nuances, you will make the choice and installation of metering devices according to the rules and it will serve you long and trouble-free. Thanks for attention.