Historical
NEMA WC 67:2005
Standard for uninsulated conductors used in electrical and electronic applications
Covers single-end (solid) and stranded, coated and uncoated copper, coated copper alloy, coated copper-clad steel, aluminum and thermocouple extension uninsulated conductors used primarily in insulated wires for aerospace, electrical, electronic, and other high performance applications.
NEMA: National Electrical Manufacturers Association [nema]