To answer a current carrying capacity question the size of the wire has to be stated.
Torque
The force experienced by a current carrying conductor placed in a magnetic field is strongest when that conductor is placed perpendicularly to the magnetic field.
Electromagnetic fields form around any current carrying conductor.
One device for increasing the magnetic field surrounding a current carrying wire, is to wrap the conductor into a set of co-axial coils. A second device is to include a ferromagnetic material in the core of such a coil.
circular
Current Carrying Capacity of ACSR DOG Conductor 300 Amp Er. Anil Prajapati
496 Amper.
30 amps
The Bersimis ACSR Conductor have the Current Carrying Capacity 1359.6A. It is rated at stranding (Alluminium/Steel) 42/7 and Resistance DC 20 degree Celcius per 1000ft. 0.013Ω.
The size of the conductor is in direct relation ship to its rating capacity of carrying a current. The larger the diameter of the conductor the larger the amperage rating capacity of the conductor.
if you know the gauge of the wire you can learn its current carrying capacity
12 swg current carrying capacity
Torque
If the conductor is carrying AC, no effect. If the conductor is carrying DC, then the compass needle will be deflected. Provided the two are close enough, and the DC current is strong enough.
There isn't a specific standard length for the unprotected length of a tap conductor in relation to the current carrying capacity of a main conductor. The length of the tap conductor is typically determined by factors such as voltage drop and local electrical codes. It is recommended to consult the National Electrical Code (NEC) or an electrical professional for specific guidance on tap conductor lengths.
The current caring capacity of a wire is based on the physical size of the wire. The larger the diameter of the wire the more amperage the wire is allowed to carry.
The ground wire size is determined from the current carrying capacity of the motor feeders.