The wire gauge in thin headphone cables is quite small. I have read of people rewiring their headphones using 12 Gauge wire. There are commercial cables that use 11 gauge. The thicker the wire the less the resistance up to a point. Many headphones use 22 or 24 gauge and it seems to work OK.
Standard 23 gauge wire is (0.0226 inches/0.57404 mm) thick in diameter.
In normal residential use it is 20 Amps. That depends on alot of things such as the wire insulation, ambient temperature, etc. Standard NM 12/2 (Romex or equivalent, which is likely what you are asking as it is the primary type used to wire residential) is rated for 20 amps, 14 gauge is 15 amps, 10 gauge is 30 amps.
Beats by Dr Dre..
if you know the gauge of the wire you can learn its current carrying capacity
remove it and twist a similar gauge conductive bare wire into the same shape. then install
The most common gauge wire used in homes for electrical wiring is 12-gauge wire.
normally 8 gauge wire is used for electric heat furnaces.
For a 15 amp circuit, a 14-gauge wire should be used.
For a 30 amp breaker, a 10-gauge wire should be used.
For a 60 amp breaker, a 6-gauge wire should be used.
10 gauge
The gauge wire used for lights should typically be between 14 and 18 gauge, depending on the wattage and distance from the power source.
For a thermostat installation, it is recommended to use 18-gauge wire.
The recommended gauge of wire to use for a 12 or 14 gauge wire is typically 10 gauge wire.
For an electric range, a wire gauge of 8 AWG (American Wire Gauge) is typically recommended to handle the high power requirements of the appliance.
For a 100 amp electrical circuit, a wire gauge of at least 4 AWG (American Wire Gauge) should be used to ensure safe and efficient electrical conductivity.
For installing a ceiling fan, it is recommended to use a 14-gauge wire.