The normal current capacity of 12 AWG copper wire is 20 amps.
Copper wires do not hold amps, they have a cross sectional area capacity to allow amperage to flow. In the electrical trade this is spoken of as "ampacity" of the wire. It is a combining of the two words amps and capacity. A # 2 copper wire with an insulation factor of 60, 75 or 90 degrees C is consecutively rated at 100, 115 and 120 amps.
In a standard 110 volt residential circuit, 14 guage wire is designed to safely handle 15 amperes. If you have devices drawing higher amperage, it will be necessary to use heavier (lower guage number) wiring, such as 12 guage for a 20 amp circuit. This prevents overheating of the wire since each diameter of wire can handle just so much electrical flow before it becomes overloaded.
I'm not sure if I understand your question but if you are asking if the wire number is the maximum amperage (current) it can hold the answer is NO. For example #8 copper wire will allow much more current (before melting) then #12 copper wire. Generally the higher the wire number the less amps it can hold.
According to the National Electrical Code (NEC), the ampacity of a 4 AWG THHN copper wire at 75°C is 85 amps, and 95 amps at 90°C.
101 amps for chassis wiring and 37 amps for power transmission. This is for short lengths of wire.
60 amps
The normal current capacity of 12 AWG copper wire is 20 amps.
Copper wires do not hold amps, they have a cross sectional area capacity to allow amperage to flow. In the electrical trade this is spoken of as "ampacity" of the wire. It is a combining of the two words amps and capacity. A # 2 copper wire with an insulation factor of 60, 75 or 90 degrees C is consecutively rated at 100, 115 and 120 amps.
In a standard 110 volt residential circuit, 14 guage wire is designed to safely handle 15 amperes. If you have devices drawing higher amperage, it will be necessary to use heavier (lower guage number) wiring, such as 12 guage for a 20 amp circuit. This prevents overheating of the wire since each diameter of wire can handle just so much electrical flow before it becomes overloaded.
10 amps
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.
50 amps.
140 AMPS
If you mean 2/0 copper wire it is rated 175 amps. # 2 wire is 115 amps. If you are referring to 2.0 metric it is rated 15 amps.
I'm not sure if I understand your question but if you are asking if the wire number is the maximum amperage (current) it can hold the answer is NO. For example #8 copper wire will allow much more current (before melting) then #12 copper wire. Generally the higher the wire number the less amps it can hold.
# 6 will carry about 40 amps more than a number 12