They dont look or feel isolated, like ones inside a headphone cable
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To add, enameled wires are also used in motor windings and old CRT monitors (deflector windings). The easiest way to identify it is to scratch with a knife or burn a small portion of the wire to see if the enamel separates.
What does it look like when the enamal seperates vs a non-enameled wire?
Slightly brighter and shinier. The enamel gives it a slightly darker matte finish. More importantly though, the peeled/burned enamel looks different from copper.
