In which GOST there is a decoding of UGO on electrical circuits?

Dmitry asks:
Good time! Where can I find the decoding of the symbols of the design documentation for the electrical installation of the building? Thank.
The answer to the question:
Good afternoon. Graphic symbols on electrical diagrams are given in GOST 2.709-89, as well as GOST 21.614.88. You can find these documents in the section with GOSTs and other regulatory documents on our website, or click on the links and

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