Sizes of Magnet Wires (Class 0) Sizes of Magnet Wires (Class 1) Sizes of Magnet Wires (Class 2) Sizes of Magnet Wires (Class 3) Sizes of Self-Bonding Polyurethane Enameled Copper Wires (JIS, Class 0 and 1) Sizes of Self-Bonding Polyurethane Enameled Copper Wires (JIS, Class 2) Sizes of Self-Bonding Magnet Wires (Solvent Type) Sizes of Ribbon Wires 1.Copper Ribbon Wires 2.Copper-clad Aluminum Ribbon Wires, Aluminum Ribbon Wires Sizes of Bobbins NEMA Wire Sizes AWG in the table below means American Wire Gauge, and SWG means British Legal Standard Wire Gauge. Standard specifications related to magnet Wires Annealed copper wire for maget wires