What is the allocated power of electricity and how to increase it
What it is
During capital construction of the times of the USSR, for example, in Khrushchev, i.e. in most of the residential premises operated to this day, even at the design stage, the allowed power was up to 1.5 kW per 1 apartment.
Later, the established norm of electricity increased to 3 kW, since there was a need to increase it in connection with the increased "gluttony" of consumers. Practice shows that in switchboards and meters usually plugs of 10-16 amperes are usually installed, so that the maximum current consumed by the apartment is limited to a total electric power of 3 kW for apartments with a gas stove. For apartments where an electric stove is installed, 7 kW is allocated. In new buildings, the allocated power can reach up to 15 kW. Such a scatter is caused by the fact that during the construction of old houses (60s, 70s) there simply weren’t such powerful consumers and so many household appliances as now.
The allocated power is the maximum amount of electricity consumed at one time.
In addition, to enter the established limit, sometimes you need to enter not 1 phase, as often happens, but 3 whole phases. This is necessary to connect modern household appliances, such as powerful electric boilers and electric stoves. This is especially true in commercial premises and industries of any scale, where you need a lot of electricity (up to 30 kW and above).
Example. For heating a country house not equipped with gas equipment, solid fuel and electric boilers are installed, the latter are safer and more convenient. For heating a house with an area of 100 sq.m. We need a boiler with a capacity of about 7-10 kW, an electric stove consumes another 3-5 kW. In total, it is necessary to increase the established limit of electricity to a minimum of 15 kW and the input of electricity in three phases.
To find out the allocated power for a private house or apartment, you need to contact the operating organization (in Moscow and the region it is Mosenergosbyt OJSC). The certificate contains information on the allocated and average power consumption of electricity. It will be needed if you draw up documents for an increase, more on that below.
Calculation of the required power
To determine how much electricity you need, you need to add the power of all consumers. For instance:
- water heating tank (boiler) - 1-2 kW;
- refrigerator - 1 kW;
- air conditioning - 2.5 kW;
- Computer - 0.4 kW;
- Lighting - 0.1-1 kW;
- And etc.
This is called Pmouth - installed capacity, i.e. total kW of all consumers. In this case, more than 5 kW is already needed, which means that the allocated power of 3 kW is simply not enough. To reduce the current consumption at the same power, it is worth switching to a 3-phase network. This will make it possible to distribute consumers into three phases. Yes, and a powerful load (more than 5 kW) can not be connected in one phase, this is prohibited by the PUE (and a modern electric stove can consume 9 kW).
Important! Do not increase maximum power by replacing automatic machines or traffic jams with larger ones. More than 25 amperes in everyday life should not be used at all if the wiring is not replaced with a new one (with the appropriate cable section). The circuit breaker protects the wiring, if it does not work during the time - the wiring will begin to melt, a fire may occur. If you replaced the wiring with a more powerful one (in houses and apartments above 2.5 mm2 rarely installed) - this is not the key to reliable operation. In old apartments, a 2.5-4 mm wire comes from the shield2 aluminum. It can easily burn out.
In this case, it should be borne in mind how many devices you turn on at the same time. There is such a thing as a “power utilization factor”, for residential premises it is 0.8-0.9. The numbers may vary depending on how you use electricity. In non-residential premises and in production Kuse of tends to 1.
Pout = Kisp * Pust
How to increase the allocated power
The first step is to collect a package of documents. Worth starting with receiving technical conditions and development of the electrical project. The power supply project of the installation is a set of technical documentation made in accordance with GOSTs and regulatory documents of the state. It can only be performed by organizations with the right license. And here you will need a floor plan, it can be ordered in design studios, a certificate of the amount of energy released, terms of reference, etc. Certain moments can be agreed individually or the designer will go to the site to familiarize himself with the task.
The next step - project approval with energy supply organizations. Next, test the installation and its compliance with the project. If the object does not correspond to the project, you must either bring it into conformity or order a new project according to the actual situation.
After that, they draw up a certificate of admission, this is done by employees of energy supervision. At the end, a full package of documents with all permissions is provided to the power supply organization and the connection or increase in allocated power is performed.
Total, to increase the allocated power of electricity, you will need:
- Getting TU.
- Development of a power supply project.
- Coordination of the project with the energy supply organization.
- Verification of installation.
- Drawing up the certificate of admission.
- Transfer of a package of documents to an ES organization.
- Conclusion of a new contract.
To draw up an electrical project you need:
- The act of demarcation of the balance sheet (to take in the DEZ or comrade. Homeowners).
- Help about the allocated power.
- A document that confirms the ownership of real estate.
- The plan of the facility, on which ALL electricity receivers are indicated.
The cost of technological connection is set at 550 by the Resolution of the REC of Moscow of March 12, 2009 N 6 “On the size of fees for technological connection of consumers to distribution electric networks in the city of Moscow”.
Additional costs will be:
- wiring replacement;
- replacement of circuit breakers;
- changing the schema of an object;
- drawing up an electrical project;
- power cable installation services;
- a new electricity meter, it will need to be replaced and installed on a model that corresponds to the number of phases and current consumption.
Applications for such services, both for individuals and for legal entities, are submitted in a single window. You may be refused if there is no technical means to increase the established limit. This can happen if the transformer is already overloaded, but there is no free nearby.
Enterprises and legal entities
If the permitted electric power in the room is too small, the legal entity may request its increase on preferential terms (1 time) up to 15 kW. More than 15 kW there are no benefits, then these services are paid at tariffs for legal entities. With an increase in allowed capacity, consumption is analyzed at nearby transformer substations (transformer substations) and, if there is a reserve for power, one of them is approved for an increase, after approval. The procedure is called "MOESK capacity renewal", in the presence of "free resources" can be performed free of charge.
The cost of the procedure for increasing the allocated power depends on:
- final power value;
- geographical location of the facility;
- technical ability to connect to the line;
- energy supply categories.
We also recommend watching a video that discusses the idea of increasing power through the use of an inverter:
If the established standards for electricity do not suit you - contact the company that will supply electricity for help. You will be able to clarify which method of solving the problem is suitable for you - an increase in capacity or the transfer of an object to a three-phase power supply system. Do not try to plan the facility and the electrical project yourself - this should be done by the relevant organizations. Otherwise, your documents simply will not be accepted, and you will waste time. We hope you now know what the allocated power of electricity is, what it happens and how to increase the limit.
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