In Greece a low-voltage electrical installation is inspected before it is first energised and again at fixed intervals. The result is recorded in an installer's sworn declaration, the ΥΔΕ (Υπεύθυνη Δήλωση Ηλεκτρολόγου Εγκαταστάτη). The interval depends on the category of the premises.
The rules are in ministerial decision 101195/2021 (Government Gazette B 4654/08.10.2021), amended in 2021 and 2023. The detailed guide, with the full list of premises, is written in Greek because it follows Greek legal text.
The rule in short
- It applies to low-voltage installations: up to 1,000 V a.c. or 1,500 V d.c.
- An inspection is required before first energisation, then periodically, and also after certain events.
- The installer who signs the ΥΔΕ classifies the installation and may set a shorter interval than the maximum, with a written justification.
- Medium- and high-voltage installations are outside these inspection rules; they have a separate declaration.
Categories and intervals
| Category | Premises | Maximum interval |
|---|---|---|
| A | Homes and similar premises | 10 years |
| B | Commercial and professional premises | 5 years |
| Γ (Gamma) | Entertainment and public-assembly premises, and outdoor professional installations | 2 years |
A mixed installation takes the category with the shortest interval. The decision lists 8 types of premises in category A, 52 in B and 58 in Γ.
Types of inspection
- Initial: after construction, before first energisation.
- Periodic: at the maximum interval of the category.
- Extraordinary: for example within 30 days of a change of category, use or (in B and Γ) owner or consumer, and immediately after changes to a distribution board or earthing, a serious accident, or damage such as flood or fire.
The full guide (Greek)
The Greek guide has the complete table of premises, the extraordinary inspections, the provisional and final ΥΔΕ (final within 45 days of energisation), submission, what the decision does not cover and the sources.
Επανέλεγχος ηλεκτρικών εγκαταστάσεων: ΥΔΕ και κατηγορίες Α, Β, Γ ↗