What feature is typically found in a transformer rated at 240/120?

A transformer rated at 240/120 volts typically features a center-tap configuration on the lower voltage side, which allows it to provide two 120-volt outputs that are 180 degrees out of phase with each other. This center tap serves as the neutral point for the 120-volt circuits, making it possible to tap into this transformer for standard household voltage requirements while also providing a higher voltage output when needed.

The presence of this center tap is essential in residential applications, where both 120-volt and 240-volt circuits are common. It allows for versatility in power distribution, accommodating various electrical loads efficiently.

The other options, while they relate to transformers, do not specifically address the common feature of a 240/120 transformer. For instance, having two or four bushings is not a defining feature of this voltage rating but relates to the design and configuration of specific transformers. Similarly, a delta connection refers to a specific type of winding arrangement that is not exclusively associated with transformers rated at 240/120 volts. A center tap not being split is critical because it distinguishes the configuration needed for standard residential or light commercial electrical systems.