NEC® Section 250.20 Informational Note refers to a corner-grounded delta transformer diagram. Which figure is it shown in?

The reference to NEC® Section 250.20 and its informational note regarding corner-grounded delta transformers is specifically illustrated in a particular figure that depicts the characteristics and grounding methods of this type of transformer.

In the context of the National Electrical Code (NEC), a corner-grounded delta configuration involves one phase of the transformer being grounded, which is an essential aspect of the design, especially concerning safety and fault tolerance. This grounding method minimizes the potential voltage rise during a ground fault condition.

The correct answer indicates that the diagram depicting this configuration is specifically shown in the second figure. This specificity is crucial for understanding the visual representation of how the corner-grounded delta is arranged, including details like the grounding point and phase connections, which might not be present in the first figure. Understanding the particular characteristics delineated in this figure aids professionals in applying the NEC standards effectively for safe electrical installations.