depends on the type of insulation around the conductor
10 Amps.
20 amps
A 14 gauge can handle up to 15amps.
15 amps.
8 guage copper wire will handle up to 50 amps. To be exact a gauge 8 wire will be used for connections requiring from 40-45 amps to a maximum of 73 amps. (24 for power transmission).
The amps that a four gauge wire will handle will depend with the thickness of the wire. If the wire is thin, the four gauge will handle 95 amps.
10 Amps.
20 amps
A 14 gauge can handle up to 15amps.
15 amps.
8 guage copper wire will handle up to 50 amps. To be exact a gauge 8 wire will be used for connections requiring from 40-45 amps to a maximum of 73 amps. (24 for power transmission).
Wire gauge refers to the diameter of the copper conductor. This is important because this determines how much current the wire can handle. For example in normal use 14 gauge wire can handle 15 amps, 12 guage wire can handle 20 amps.
A 12 Gauge wire will handle approximately 20-26 Amps regardless of the voltage. Higher amperage can be attained by using wire with insulation that can handle higher heat.
10 guage
You are probably thinking about 1/0 wire (1 ought wire). In copper it is rated at 175 amps and in aluminum 125 amps.
A #6 copper wire with an insulation rating of 90 degree C is rated at 65 amps.
3.7 Amps