Inspection of electrical low voltage installations

Inspection of electrical low voltage installations
According to the NEN 3140 / NEN-EN 50110-1 standards


In recent decades, more and more countries have become aware that safety is an important requirement for low-voltage electrical installations. In the Netherlands, the Health and Safety at Work Act stipulates that building installations must be inspected with appropriate regularity.

In order to comply with the legislation, the NEN 3140 and NEN-EN 50110-1 standards are explicitly stated. The Labour Inspectorate applies these standards during building inspections. If, in the event of an accident, it is found that these standards have not been applied or have not been applied sufficiently, the employer will be at a loss if he has to prove that he has fulfilled his duty of care under the Health and Safety at Work Act.

NEN 3140 / NEN EN 50110-1

The NEN 3140 and NEN-EN 50110-1 standards set out requirements for safe operation and working with or on electrical installations. The activities mentioned in this product sheet concern the 'Inspection' section of the fixed installation.

The purpose of the inspection is to check that the electrical installation (still) complies with the technical regulations and safety regulations, as defined in the relevant standards and the detection of defects that may occur after commissioning and may impede operation or constitute a possible source of hazard.


In an inspection in accordance with the NEN 3140 standard "Operation of electrical installations", the electrical installation is assessed based on the safety regulations for low-voltage installations - as stated in the NEN 1010 standard. This assessment is carried out through a visual inspection, measurements and tests.

The inspection methodology used is based on the regulations of the NEN 3140 / NEN EN 50110-1 standards. This methodology is accredited by the Dutch Accreditation Council (RvA - Raad voor Accreditatie), which ensures the client is assured of an expert approach and an independent, honest implementation. In addition, this methodology is laid down in a quality system and associated technical reference works. Independent content experts of the RvA assess the accredited activities annually.

Bureau Veritas Industrial Services has experience in and with all industrial installations, with utility, in healthcare environments and in public buildings. An independent and high-quality inspection can always be carried out with our knowledge and experience.


For additional information about our services and the possibilities, please call us on +31 88 4505720.