When using a transformer, what is a common method to measure voltage on a secondary winding?

Using a multimeter is a common and effective method to measure voltage on a secondary winding of a transformer. A multimeter provides a direct measurement of the voltage, allowing a technician to assess the output of the secondary winding accurately. This tool is designed to measure various electrical parameters, including AC and DC voltage, which makes it versatile for working with transformers.

The accuracy of a multimeter ensures that the voltage level is checked under operational conditions, confirming whether the transformer is functioning as intended. Technicians depend on multimeters for diagnostics because they provide immediate feedback about the electrical system's status.

While other methods, such as calculating voltage based on primary voltage and turns ratio, can provide a theoretical value, they do not measure the actual output directly. Visual inspection of the windings can offer insights into the condition of the transformer but fails to provide any voltage information. A clamp meter, while useful for measuring current in conductors, is not suitable for measuring voltage directly on windings unless specifically designed for such applications. Thus, using a multimeter stands out as the most reliable approach for measuring secondary voltage in transformers.