A.C. Question

Just use the COS.

One does not really calculate cable size. Please see the MANY already existing CR4 threads on this.

(Circumference squared x diameter) + K / atomic number of the conductor alloy. K = a Constant of either 34.657 for one conductor in free air, or 555.90 for 3 conductors in water.

seems like a simple question. the info is very easy to find. factor in the length of the wire.

Look. We're sick of cable sizing questions here, Guvnor, especially when you give no inkling of where on the planet you are. All countries have their own wiring codes that are based upon the standards applicable to those lands.

If you can't do it, hire a bleedin' electrician and be done with it.