NOM Certification
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NOM is the abbreviation of Norma Oficial Mexicana, Norma Oficial Mexicana (NOM) is the official standards body of Mexico. NOM standards are used for NOM Mark certification as well as other types of Mexican certification schemes. Most electrical products that operate above 24V AC/DC are required to comply with NOM safety standards. Conformity to the standards is primarily demonstrated through one of two main routes: The first route is the Certificate of Conformity (CoC), which can be issued by a foreign certification body with the appropriate Mexican accreditation. CoC-approved products cannot carry the NOM mark, but it is an acceptable route to compliance and offers a number of advantages, as shown in the certification details. The second path is NOM certification. Official NOM marks/certifications can be issued by accredited Mexican certification bodies. NOM certification requires samples to be evaluated in-country by a Mexican authorized laboratory. The laboratory then submits the results of its assessment to the Mexican accreditation body, which then issues the NOM certificate.
The role of the NOM mark: Products entering Mexico must be tested by accredited Mexican laboratories in accordance with the national mandatory NOM standards. Testing by laboratories outside Mexico is only possible if there is an inter-laboratory mutual recognition agreement with a laboratory accredited in Mexico.
NOM certificates are not transferable. However, manufacturers who are NOM holders can extend the use of their NOM certification to Mexican distributors, who can then obtain their own NOM certification without additional testing.
Products requiring NOM certification include household refrigerators, freezers, gas water heaters, washing machines, air conditioners; small induction motors and power tools; vertical and submersible pumps; compact fluorescent lamps and wiring devices; systems) and telecommunications products intended to be connected to a public telecommunications network (PTN) and designed to process, receive, transmit or convert signals.
