ENEC is a common safety mark for Europe which confirms that a product is in accordance with relevant European standards. It also shows compliance with the LVD safety requirement.
ENEC certificaiton is a typical ISO type 5 certification, which require both annual factory inspection and annual sample testing. therefore, Most LITE and component manufacturers prefer to have ENEC certification as they can rely on the contineous compliance to the standards.
Nemko is one of the main certifier for ENEC certification.