We have been asked many times how to configure our standard European primaries for a specific mains voltage.
Although they perhaps look complicated they are in fact very simple to use.
The confusion comes about because of the +10V tap. This does exactly what it says on the tin, +10V. So if your mains was 230V you would us the 220V terminal and the +10V terminal as 220V +10V = 230V.
All the different combinations are shown in the diagrams below:.
Please remember that the mains supply is potentially lethal, and treat it with the greatest of respect at all times. Always follow high voltage procedures.