You are probably thinking about 1/0 wire (1 ought wire). In copper it is rated at 175 amps and in aluminum 125 amps.
According to NEC, it's max rating in free air is 18 amps.
70 amps.
A #8 copper wire with an insulation rating of 90 degrees C is rated at 45 amps.
18 amps.
A wire is not like a bucket that holds amps but more like a pipe that lets the amperage flow through it. A # 14 wire is rated at 15 amps. Code only allows up to 80% for continuous use, 15 x .8 = 12 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.
10 guage
34.539 miliamps is only 0.034539 amps. A 16 gauge wire will handle that.
According to NEC, it's max rating in free air is 18 amps.
140 AMPS
70 amps.
101 amps for chassis wiring and 37 amps for power transmission. This is for short lengths of wire.
the gauge of the wire determines how much amperage a wire can carry the insulation determines how much voltage the wire can handle
A #8 copper wire with an insulation rating of 90 degrees C is rated at 45 amps.
10 gauge wire will only run up to 30 amps
18 amps.
A wire is not like a bucket that holds amps but more like a pipe that lets the amperage flow through it. A # 14 wire is rated at 15 amps. Code only allows up to 80% for continuous use, 15 x .8 = 12 amps.