how do i build an eletrical system?

Question

assingnment for school

Answer 1

Are you going to build it or just descirbe what real builders do?

Making a little model would be difficult. You would need an energy source to turn a small generator and a distribution system including transformers and loads.

For a description try this website of a power company http://www.sceg.com/en/about-sceg/power-plants/power-plant-details.htm

Answer 2

Go back and tell your teacher the question can't be answered. More detailed information needs to accompany the question, so that people can answer you. If your teacher looks at you stupidly and can't provide the information you need, get a new school.

Answer 3

instead of asking the same vague question over and over again maybe you should ask a more specific question. If you are doing an assignment for school, explain the assignment. You get the idea...