Work on introducing new and updating old wiring often involves installing or replacing an electric meter. Only a representative of the power supply company can connect the power supply. Seal, test and start the system. Since trained people with permission to carry out work in networks with a voltage of up to 1000 V are allowed to do these tasks. But before that, you can install the meter yourself and connect the necessary electrical devices to it. For installation, it is necessary to comply with the requirements of the Electrical Installation. Code and perform work in accordance with the connection diagram. Which depends on the phase of the metering device.
Basic principles of installing an electricity meter
According to the rules for installing electricity meters, before entering the line into the electricity meter, a circuit breaker with a rating equal to poland phone number list the maximum load current must be installed. The device ensures the possibility of safe replacement and protection of the measuring device from overvoltage (it is triggered when the voltage is exceeded). Otherwise, the meter may become inoperative when there is a voltage surge.
It is preferable to use a two-pole circuit breaker
Which allows you to remove voltage from the phase and neutral. The device is mounted on a DIN rail with mandatory grounding on the electrical panel. After the input circuit breaker, an RCD (residual current device) is installed, which is triggered if an insulation breakdown occurs.
The meters are placed at a height of 0.8-1.7 m. It is how to improve the productivity of a sales team important to provide protection from atmospheric factors, for which special boxes (boxes) are used, which are completely hermetic for outdoor installation and are equipped with a glass insert that allows readings to be taken without opening the case. Such an autonomous box is used in all cases when it is not possible to install the meter in a place well protected from precipitation.
The connection of the meter after installation
Out using copper wires with a cross-section corresponding to singapore lead the maximum current load from the technical conditions. The minimum cross-section value is 2.5 mm 2 . The work is carried out in accordance with the diagram shown on the front panel of the device. Upon completion of all work, the terminal cover of the device must be sealed by a representative of the company supplying electricity.
Preparatory work
Before you begin installation, you need to agree on several points with the electricity supply company:
What kind of metering device will be installed. The main thing when choosing an electric meter model is the fact of certification in accordance with the law. The passport of the metering device must contain a note that it is included in the State Register of Measuring Instruments.
Where the electricity meter will be installed. Depending on the situation, the meter can be installed outside or inside. If the installation location in an apartment building is provided for by the project. It is worth considering this and installing the device where it is recommended by the design documentation. In a private house, electricity meters are often installed in the yard or on a pole. But they can also be placed indoors. If required by the energy supply organization, the device is installed on the main facade of the house.