I am new to the field and have stumbled across an issue. The current project I am working on is requiring me to calculate how many windings I need to increase voltage in a system from 12v to ~400v. The Initial winding will be fed from a 0 A.W.G. braided copper wire and the outgoing feed will, ideally, be a 8 A.W.G. braided copper wire. Is there a formula that can enable me to acquire this calculation.