What is referred to as "secondary voltage"?

Secondary voltage refers to the voltage supplied after transformation from primary voltage levels. In electrical systems, primary voltage typically refers to the high-voltage side of transformers, which is used for long-distance transmission of electricity. When this electricity reaches a substation, it is transformed down to a lower voltage that is deemed more suitable for distribution to homes and businesses, which is known as secondary voltage.

This step is crucial for ensuring safety and compatibility with consumer electrical devices, as high voltages cannot be used directly in typical residential and industrial applications. By lowering the voltage after transformation, the electricity can be distributed effectively while minimizing the risk of electrical hazards. This process of transformation is fundamental to the functioning of power grids, enabling the safe and efficient delivery of electricity.