Yes, you can plug a 110-volt refrigerator into a 120-volt outlet. Most appliances designed for 110 volts are typically built to handle a wide range of voltages, usually from 110 to 120 volts. This slight difference in voltage should not cause any issues with your refrigerator. However, it's always wise to check the manufacturer's specifications to ensure compatibility.
Absolutely!
The flexibility of appliance power supplies means that they can often work over a range of voltage values. In the U.S., you may encounter different voltage values: 110V, 115V, 120V, and even 125V. Your refrigerator is likely to operate fine on any of these voltages.
Historical Context
Early appliances were indeed made to operate on the earliest nominal operating voltage, which was 110V. However, modern motors are designed to handle a range of voltages, typically within 10% of their nominal voltage. For a 110V motor, this would mean it can safely operate between 99V and 121V.
Modern Voltage Standards
It is true that you haven't seen many appliances labeled as 110V in recent decades. The trend has shifted towards higher voltages, with 115V and 120V becoming the norm. Many modern appliances are now rated for 130V, providing a wide range of operating voltages. The typical voltage in your house may be around 126V.
Motor Safety
Operating an AC motor on less than its nameplate voltage can be dangerous and may even result in the motor's destruction. However, if you operate it at or slightly above its nominal voltage, it will likely function normally. As a general rule, you are safe to use a 110-volt refrigerator on a 120-volt outlet as long as it is within the appliance's tolerance range.
Voltage Variability
The actual line voltage can vary, and 117V is a common value. In some situations, the voltage may drop below 110V or rise above 120V, but most devices are protected from such variations. Voltage spikes or surges are rare and usually not a concern for household appliances.
Conclusion
While there are some nuances to voltage compatibility, in most cases, you can confidently plug a 110-volt refrigerator into a 120-volt outlet and expect it to function properly. Always refer to the manufacturer's specifications for the best peace of mind, but in general, modern appliances are built to handle the slight variations in voltage.