Final answer:
The larger number on a transformer nameplate signifies the secondary winding's voltage. This corresponds to the higher voltage the transformer outputs in the power distribution system.
Step-by-step explanation:
The larger number on the transformer nameplate refers to the voltage of the secondary winding that the transformer should be installed. The transformer equation indicates that the ratio of the secondary to primary voltages in a transformer is equivalent to the ratio of the number of turns in their windings. For power transmission, transformers are essential for changing voltages at various points in a distribution system to minimize energy losses and ensure safety.