The question with this title was asked by the reader Ilya.
This is already 39 questions from the "question-answer" series.
I quote verbatim the text of the question posed by Ilya:
Hello. I live in a private house, at the moment it is connected to the power supply by an overhead line, one phase. I want to change the type of connection to underground + switch to three phases. Several related questions have matured, the answers to which differ from person to person.
- Can I install the wire myself? (trench 90 cm, sand, HDPE pipe + armored wire + marking tape)
- Is it possible to install an electricity meter (in the dashboard) directly on the power transmission pole (private sector, the line runs parallel to the fence of the house)?
- What documents and actions in general are required to carry out all the procedures officially and without further problems?
Thank you in advance for your response.
I reviewed the issue and advised Ilya within the framework of my knowledge and qualifications as follows:
Good day!
Well, the first thing you should pay attention to is the transition from a single-phase electrical system to a three-phase one. In this regard, you are obliged to submit an application in accordance with the established procedure to the electricity supplier on the balance sheet of which the corresponding line is located, to change the type of connection. In the application, you must indicate the following data:
- The allocated power of the consumer.
- The type of meter that you plan to install for electricity metering.
- Tariff for calculation of consumed electricity.
- The number of phases is 3.
- Connection diagram to an external distribution network with reference to a specific section of the line.
After agreeing on such a connection, the energy supplying organization has the right to require the arrangement of a grounding device at the site and the output of the protective conductor to the distribution network. The list of documents that you will need to connect a three-phase power supply may differ depending on individual characteristics.
Whether you will be allowed to install a metering device on a pole will depend on experts and location on the ground. If the pole is on the territory of your site, you will be responsible for the safety of the electricity meter. If the pole is outside your territory, then the responsibility lies with the owner of the electrical network. And no one wants to take on the extra costs in the event of damage to electrical equipment.
Regarding the underground laying of the cable, it depends on the section of the circuit - if it is a line from the electricity meter to your individual residential building, there will be no problems in self-laying. If this is a section from an external distribution electrical network to an electricity meter, no one will allow the cable to be laid underground. Since this is a potential opportunity for illegal siphoning of electricity.
P.S. Link to some of the past Q&A parts - Part 38, Part 37, Part 36, Part 35, Part 34, Part 33.