What is generally true about electrical equipment such as transformers regarding grounding?

Electrical equipment, particularly transformers, typically must have at least two connections to ground to ensure safety and proper operation. Grounding is crucial for several reasons: it helps prevent electrical shocks in the event of a fault, provides a path for fault currents, and stabilizes voltage levels during normal operations.

In the case of transformers, having two ground connections enhances the reliability of the grounding system. This redundancy means that if one ground path fails, the other can still provide a safe path for fault currents. Additionally, transformers often have both a primary and a secondary side, which may necessitate separate grounding connections to ensure that all components are effectively protected.

Although options suggesting fewer connections to ground might seem convenient, they do not meet the safety standards and best practices established in the electrical industry. The requirement for multiple ground connections supports a comprehensive safety approach, ensuring that systems are adequately protected against electrical faults and minimizing the risk of equipment damage or personal injury.