Just a rule of thumb: The diameter of copper wires should be 1 square mm per 10 A. But there is no true proportionality.. 30A should have 6 square mm, not 3....
Just a rule of thumb: The diameter of copper wires should be 1 square mm per 10 A. But there is no true proportionality.. 30A should have 6 square mm, not 3....