What is the typical voltage of a standard household electrical outlet in the United States?

The typical voltage of a standard household electrical outlet in the United States is 120 volts. This specification is important to know because it is the standard voltage supplied for most household appliances and electronic devices.

Historical factors have influenced this voltage level. While at one point it was more common to refer to these outlets as 110 volts, the more accurate and standardized figure in modern usage has been established at 120 volts. This slight increase aligns with safety and efficiency standards adopted over the years.

Understanding this voltage is crucial for both residential wiring and for choosing appropriate appliances to ensure they function properly and safely within the established electrical systems. Devices designed for 120 volts will typically operate correctly within this voltage range, ensuring optimal performance.