Low voltage
Industrial:
Inspection required every 5 years.
Domestic:
Inspection required every 25 years.
.jpeg?width=474&height=316&name=downloaden%20(4).jpeg)
High voltage
Annual inspection:
High-voltage installations must be inspected annually.
.jpeg?width=434&height=315&name=downloaden%20(2).jpeg)
Thermography
Not legally required:
Thermographic inspections are not mandatory but are sometimes requested by insurance companies.
The frequency is often determined by the insurer.
Recommended frequency:
Annual inspection.
.jpeg?width=463&height=333&name=downloaden%20(3).jpeg)