In a typical single-phase transformer delivering 120/240 volts, which coil leads are connected to the X2 terminal?

In a typical single-phase transformer, the transformer is designed with two coils known as the primary and secondary windings. The connection of these coils is critical for transforming voltage levels effectively. The X2 terminal, which is associated with the secondary winding, is typically linked to one of the coils that forms part of the secondary voltage.

In the case of a 120/240 volts transformer, the windings are arranged to provide two distinct output voltages—120 volts and 240 volts. When interpreting the coil representations AB, BC, and AC, we need to recognize how the coils interact and where the X2 terminal is positioned in relation to them.

The designation “BC” represents a particular configuration within the transformer winding. By connecting the B coil to the C coil, you are establishing a specific voltage relationship that allows for the correct output potential. Thus, the connection to the X2 terminal reflects the output voltage that can be drawn from the secondary side of the transformer.

Understanding the interplay of these coils is critical for ensuring that the transformer operates at its intended voltage levels, and selecting the correct pairing ensures that the output voltage is delivered safely and effectively to the load.