What kind of coil wire is used on a Fender pickup?
Most all Fender single coil pickups use 42 Plain Enamel, 43 Plain Enamel and 42 Formvar. I ve seen coils with really low DC resistance and the tolerance and specifications could be closer to 41 AWG. AWG is the American Wire Gauge that sets the standards for magnet wire specifications. The Plain Enamel and Formvar are insulation s are baked on the surface of the bare copper magnet wire. The insulation s can have Minimal, Nominal and Maximum specifications which can affect the size and inductance of the coil being wound. The bare magnet wire can also have Minimal, Nominal and Maximum specifications. A Minimal diameter magnet wire for a specific grade will have higher DC resistance for a given length than a Maximum diameter magnet wire.
