The following information gives an overview of power systems used throughout the world.
The configurations listed for the electrical systems of industrialised countries are accurate and reliable although those for developing countries, only represent the most common systems. The absence of single standards prevents an exact listing of the configurations available.
It should also be noted that the lack of consistency in the configurations means that power supply systems in developing countries tend to be ungrounded.The table below illustrates the various world wide configurations. To view those suited to the country in question, please click on the initial letter for the country concerned.