UL/CSA/ANCE Standard
These standards are co-published by UL, the Association of the Electrical Sector (ANCE), and the Canadian Standards Association (CSA). These standards reflect the requirements of the US, Canada, and Mexico.
The Canadian Standards Association, which operates under the name CSA International (CSA), provides certification services for manufacturers who, under license from CSA, wish to use the appropriate registered CSA Marks on certain products of their manufacture to indicate conformity with CSA Standards.
ANCE is a National Organization for Standardization (ONN) registered by the DGN (Dirección General de Normas) in the electrical sector and household appliances which developes Mexican Standards (NMX) and collaborates in the development of the Mexican Official Standards (NOM), voluntary and mandatory standards, respectively.