Elektrik İç Tesisleri Yönetmeliği (Regulation on Electrical Internal Installations)

Overview

The Elektrik İç Tesisleri Yönetmeliği (Regulation on Electrical Internal Installations) is a long-established regulation on low-voltage installations inside buildings, issued by the Ministry of Energy and Natural Resources and published in Official Gazette no. 18565 of 4 November 1984. The record rests on the consolidated text, with amendments from the 1990s and 2000s, read from the official Word version on mevzuat.gov.tr. The regulation is widely consulted in design reviews in Turkey.

Under Article 1, the regulation covers the construction and operation of electrical internal installations and excludes generation and distribution installations inside buildings. Under Article 2(a), it applies to new installations, complete replacement of an installation, and existing installations with an evident risk of death, injury or fire. This framework shows that the regulation can apply not only to new buildings but also to risky existing installations.

Its content addresses protection against direct and indirect contact, earthing, wiring and switchgear, and it sets the voltage-drop limits widely used in design reviews. Voltage drop from the building connection box to the loads must not exceed 1.5% for lighting and socket circuits and 3% for motor circuits. Where a transformer supplies the building, the drop between the transformer output and the building connection box must not exceed 5%; these provisions were amended by the Official Gazette of 30.11.1995, no. 22479.

Under Article 46(a), before an installation is energised, the indirect-contact protection measures must be verified against Articles 31-40. The limit of the record is that the regulation is old and its amendments are spread over different periods; it may also not match current IEC 60364 practice at every point. Designers should therefore read its provisions together with the related earthing and high-current installations regulations.

Key points

1. Covers construction and operation of electrical internal installations; generation and distribution installations inside buildings are excluded (Article 1).
2. Applies to new installations, complete replacement, and existing installations with evident risk of death, injury or fire (Article 2(a)).
3. Voltage drop from the building connection box to loads must not exceed 1.5% for lighting and socket circuits and 3% for motor circuits.
4. Where a transformer supplies the building, the drop from transformer output to the building connection box must not exceed 5%.
5. The voltage-drop provisions were amended by Official Gazette 30.11.1995, no. 22479.
6. Before energising, indirect-contact protection measures must be verified against Articles 31-40 (Article 46(a)).
7. Published in Official Gazette no. 18565 of 4.11.1984.

Using it in design

• In cable sizing (TR profile), add the Turkish voltage-drop limits: 1.5% lighting and socket, 3% motor from building entry, and 5% from transformer to building entry.
• Offer them as an alternative rule set next to IEC 60364-5-52 annex values and report the governing one.
• Add verification of indirect-contact protection to the pre-energising checklist.
• Read together with the related earthing and high-current installations regulations.

Who should read it

Electrical engineers who prepare, review and approve low-voltage internal installation projects in Turkey.

Related standards

• IEC 60364 series
• Elektrik Tesislerinde Topraklamalar Yönetmeliği
• Elektrik Kuvvetli Akım Tesisleri Yönetmeliği

Publication details

Authors

T.C. Enerji ve Tabii Kaynaklar Bakanlığı

Publisher

T.C. Enerji ve Tabii Kaynaklar Bakanlığı

Year

1984

Document number

RG 18565 (04.11.1984)

Document language

Turkish

Source type

Turkish regulation

Access

Free to read

Licence

Bibliographic reference only — the document is not redistributed here; confirm reuse terms at the original source

Citation