In addition to requiring NOM-001 certification, all external power supplies that are sold separately in Mexico require a certification known as NOM-029.

A NOM-029 certification ensures that Mexico’s energy efficiency standards have been met. NOM-029 is sometimes referred to more completely as NOM-029 ENER-2017, as it was last updated in 2017 (with an effective date of April 2018).

However, if a power supply (such as a charging cord for a cell phone) is packaged and sold as an accessory along with the main product, then it does not need additional NOM-029 certification. In that case, the cord is covered by the phone’s overall certification.

When it is needed, a NOM-029 certification is obtained through test evaluation. It is applicable for all power supplies intended to convert electrical voltage from alternating current (AC) to a single level of voltage or direct current (DC), with a maximum output power of 250W or less.

Power supplies that allow switching to manual output voltage levels, independent from the product, also require testing and certification.

NOM-029 is not applicable in some instances. If your electronic device was previously approved under NOM-019-SCFI-1997 or NOM-001-SCFI-1993, its power supply will not require the additional certification of NOM-029.

NOMs (“Norma Oficial Mexicana” or Official Mexican Standard) detail the form, format, and documentation that must be maintained for legal compliance.

Contact LARCG for more information regarding this or any other Latin America certification issue, whether in Mexico, Central America, South America, or the Caribbean.