4.1.2.1 In Mexico, thermoset-insulated aluminum conductors are limited to sizes 6 AWG and larger inaccordance with NOM-001-SEDE, Standard for Electrical Installations .4.1.3 Copper-clad aluminum conductorsIn the United States, the requirements of Annex D shall apply to solid conductors or the individual wiresof stranded conductors prior to stranding.In Canada and Mexico, copper-clad aluminum conductors shall not be used in thermoset-insulated wiresand cables.