Voltage Range for Distribution Transformers

Voltage Range for Distribution Transformers

• A. Typically changes voltage from thousands of volts to lower levels, such as 120/208 volts.
• B. An electrical device used to change the voltage
• C. The system used for monitoring and controlling the flow of electricity
• D. Cubicles that contain equipment for measuring electrical consumption

Answer: (A)

Distribution transformers take high distribution voltages and step them down to the lower voltages that customers actually use. On the feeder you might have thousands of volts present, and the transformer reduces that to standard service voltages such as 120/208 V for many commercial setups (and 120/240 V for typical residential service). This voltage reduction is exactly what enables safe and practical power delivery to homes and small businesses. So the statement describing lowering from thousands of volts to a low level like 120/208 V best captures what distribution transformers do in real-world networks. The other descriptions talk about a device that changes voltage in general, or about systems for monitoring/controlling electricity, or about meters and cubicles, which are not about the transformer’s voltage-division role.

Distribution transformers take high distribution voltages and step them down to the lower voltages that customers actually use. On the feeder you might have thousands of volts present, and the transformer reduces that to standard service voltages such as 120/208 V for many commercial setups (and 120/240 V for typical residential service). This voltage reduction is exactly what enables safe and practical power delivery to homes and small businesses.

So the statement describing lowering from thousands of volts to a low level like 120/208 V best captures what distribution transformers do in real-world networks. The other descriptions talk about a device that changes voltage in general, or about systems for monitoring/controlling electricity, or about meters and cubicles, which are not about the transformer’s voltage-division role.