Describe the difference between delta and wye configurations.

The distinction between delta and wye configurations primarily involves how the windings of the transformer or motor are connected. In a delta configuration, each of the three windings is connected in a closed loop, forming a triangle shape. This means that each winding connects to the two others at its ends. This configuration is often used in industrial applications due to its ability to handle higher currents and deliver substantial power, especially under conditions requiring high starting torque.

In contrast, the wye configuration has a different structure. Here, one end of each winding connects to a common neutral point, while the other ends connect to the phase outputs. This connection accommodates a neutral point that can be intentionally grounded, which may improve safety and allow for balanced loads more easily. The wye configuration typically results in lower line-to-neutral voltages compared to the line-to-line voltages present in a delta system.

This understanding clarifies why the correct answer accurately depicts the characteristics of both configurations. The nature of their connections (closed loop versus grouped at a common point) fundamentally defines how they operate and the applications for which they are best suited.