On a single bushing transformer, where does the other end of the primary coil terminate?

In a single bushing transformer, the primary coil typically consists of two ends, one of which is connected to a potential source while the other end serves a specific purpose depending on the transformer design. In the case of a single bushing transformer, the other end of the primary coil is usually connected to the tank ground.

This connection is crucial because it enhances safety by allowing for effective grounding of the transformer. Grounding helps prevent electrical faults from posing a danger to both the equipment and personnel. It ensures that in case of a fault or surge, there is a safe path for the electrical current, minimizing the risk of shock or fire.

By connecting the other end of the primary coil to the tank ground, the transformer maintains a stable reference point and reduces the potential for voltage imbalances that could arise if the coil were left ungrounded. Thus, grounding plays an essential role in minimizing electrical hazards and maintaining the transformer's operational integrity.