There is a nonconductive coating on the wire that also prevents it from oxidizing. The wires can touch, but if the coating isn't scratched it won't short.
Some fine grit sandpaper will reveal the metal so you can solder connections.
will also see it sold as “magnet wire” (for winding your own electromagnets) and the heat from your soldering iron is usually enough to melt through the enamel varnish
That's generally not recommended as a way of stripping them though, since the coating is often made of polyurethanes, which release alkyl isocyanates (highly toxic) when heated strongly. While a small amount in a well-ventilated area might not be enough to give you any problems, if you get too much it is very bad. The organic material will also impact the ability to solder. Better to scrape it off first.
There is a nonconductive coating on the wire that also prevents it from oxidizing. The wires can touch, but if the coating isn't scratched it won't short.
Some fine grit sandpaper will reveal the metal so you can solder connections.
will also see it sold as “magnet wire” (for winding your own electromagnets) and the heat from your soldering iron is usually enough to melt through the enamel varnish
That's generally not recommended as a way of stripping them though, since the coating is often made of polyurethanes, which release alkyl isocyanates (highly toxic) when heated strongly. While a small amount in a well-ventilated area might not be enough to give you any problems, if you get too much it is very bad. The organic material will also impact the ability to solder. Better to scrape it off first.