(Re)Inspection of Electrical Installations

The risk of electric shock or fire due to electrical issues can be significantly reduced through regular inspections of electrical installations (DEI certificates).

Current legislation specifies certain requirements and obligations for these inspections, depending on the type of property.

To ensure that your electrical installation is completely safe, it must comply with the applicable standards and legal regulations. For this reason, regular inspections are required as defined by law (Government Gazette 470, Issue B, March 5, 2004).

The HEDNO certificate is required in the following cases:

• For the electrification of construction sites.
• After the completion of any new electrical installation, before it is put into operation.
• After any modifications or extensions to the installation, before activation.
• At regular intervals as specified by law to ensure that no wear or damage has occurred that could affect safety.
• When a name change on the DEI account is requested, and the certificate has expired.
• When reconnection is requested, and the certificate has expired.
• When an increase in power supply from DEI is requested.

The HEDNO certificate includes:

• A Declaration of Responsibility from a Licensed Electrical Installer and a Delivery Report of the installation.
• Electrical installation inspection protocol according to ELOT HD 384.
• Electrical installation inspection protocol according to KEE (for older installations or if both standards apply).
• A single-line diagram of the electrical panel.
• A floor plan showing the cable routes, as well as the locations of switches, outlets, lighting, motors, and panels.

Re-inspections according to current legislation must be conducted as follows {classification of internal electrical installations (EHE) and the intervals for regular re-inspections}:

• The classification of electrical installations into Categories A, B, and C is done by the person preparing the declaration (YDE).
• The classification may be noted in the YDE with abbreviations, e.g., an electrical installation in a flower shop may be referred to as B1.
• If an installation includes areas that fall into different categories (mixed installation), it is classified under the category with the shortest re-inspection interval.
• If deemed necessary for safety reasons, the person preparing the YDE may set a shorter re-inspection interval than the maximum allowed. In such cases, it must be justified in the declaration.

Category A: Electrical installations in residences and similar spaces, with a maximum re-inspection interval of ten (10) years

1. Residences or apartments
2. Detached houses
3. Monasteries and communes
4. Common areas and staircases in residences and similar spaces
5. Residential storage rooms and related areas
6. Parking areas in residences and similar spaces
7. Exterior areas of residences (gardens, private pools, saunas, jacuzzis, etc.)
8. Other cases in this category not mentioned above.

Category B: Electrical installations in professional spaces, with a maximum re-inspection interval of five (5) years

1. Flower and gardening shops
2. Closed pumping stations for irrigation, water supply, and sewage
3. General warehouses
4. Paint shops
5. Factories
6. Workshops
7. Libraries
8. Offices
9. Vehicle showrooms
10. Retail stores in enclosed spaces
11. Shopping centers without their own substation
12. Laboratories
13. Printing and publishing activities
14. Medical practices and physiotherapy clinics
15. Dry cleaners and laundromats
16. Restaurants, cafes, and bars with up to 50 patrons
17. Confectioneries and dairy shops
18. Coffee roasting shops
19. Professional spaces without business activity
20. Beauty institutes
21. Computer centers
22. Candle-making shops
23. Common areas of professional buildings
24. Jewelry stores
25. Barber shops and hair salons
26. Livestock and poultry farms
27. Canteens
28. Butcher shops and fish markets
29. Harbor sheds
30. Temples that receive up to 50 people
31. Hotels and guesthouses with up to 50 people
32. Woodworking shops
33. Produce stores
34. Grocery stores
35. Film production studios
36. Laundry facilities and cleaners
37. Bakeries and confectioneries
38. Radio and television stations
39. Supermarkets without their own substation
40. Vehicle repair shops
41. Covered parking facilities
42. Leather goods polishing shops
43. Printing presses
44. Pharmacies
45. Bakeries
46. Tutoring schools
47. Photography studios
48. Photocopy centers
49. Dance schools
50. Paint stores
51. Toll plazas
52. Other related cases

Category C: Electrical installations in entertainment venues and public gathering spaces, as well as outdoor professional installations, require re-inspection every two (2) years

1. Rural clinics, health centers
2. Airports
3. Courtrooms
4. Salt flats
5. Amphitheaters
6. Open professional and amateur sports fields (football, basketball, volleyball, tennis, badminton, etc.)
7. Open pumping stations
8. Archaeological sites open to the public
9. Nurseries, kindergartens, daycare centers, orphanages
10. Public libraries
11. Electricity generation installations connected to HEDNO
12. Outdoor electric vehicle charging stations
13. Exhibitions
14. Shopping centers with their own substation
15. Seasonal refreshment stands (e.g., beach bars)
16. Construction sites
17. Theaters, puppet theaters, shadow theaters
18. Greenhouses
19. Public and private buildings where transactions with the public occur
20. Institutions for people with disabilities
21. Equestrian clubs
22. Fish farms
23. Shops providing products for consumption on-site (e.g., restaurants, cafes, bars) with more than 50 patrons
24. Entertainment venues
25. Cinemas
26. Outdoor public spaces and professional storage areas
27. Public areas in entertainment venues
28. Cemeteries
29. Clinics, hospitals, psychiatric facilities
30. Schools (primary, secondary, and higher education)
31. Event and reception venues
32. Amusement parks and playgrounds
33. Port facilities for pleasure boats
34. Museums
35. Temples and places of worship with more than 50 attendees
36. Hotels with spaces hosting more than 50 visitors
37. Nursing homes and elderly care units
38. Childcare centers for children under 6 years old
39. Public squares and parks with public lighting
40. Fuel stations
41. Temporary accommodation for earthquake or fire victims
42. Public pools, both indoor and outdoor
43. Railway stations
44. Supermarkets with their own substation
45. Publicly accessible caves
46. Military camps
47. Outdoor parking areas
48. Prisons and reformatories
49. Ski resorts
50. Campgrounds
51. Sports gathering venues
52. Passenger waiting areas (at airports, bus/train/tram/metro stations, etc.)
53. Quarantine zones for people, animals, plants, or agricultural products
54. Fairgrounds
55. Concert venues
56. Conference venues
57. Refugee reception centers
58. Other cases in this category.

The results of the re-inspection must be recorded in a protocol, in accordance with the applicable Standards and Legislation. This protocol provides written evidence that your electrical installation meets safety criteria and is submitted to your local HEDNO office.

For any clarification or offer, we are at your disposal.