Answer / Akash Mishra

To calculate cable size for ampere (amp) rating, you can use the American Wire Gauge (AWG) system or the International Electrotechnical Commission (IEC) system. The formula in AWG is: I = SA^(n), where I is the current in amps, S is the cross-sectional area of the wire in circular mils, and n is a constant depending on the material of the wire. In the IEC system, you can use tables to find the appropriate cable size for a given amp rating.

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