What is the typical voltage of a standard household circuit in the US?

The typical voltage of a standard household circuit in the US is 120 volts. This voltage level is established for residential electrical systems to safely power a variety of household appliances, lighting, and other electrical devices. The 120-volt circuits are designed for general-purpose use and are commonly found in wall outlets throughout homes.

Understanding the context of this voltage is important. The 120 volts allows for efficient operation of standard household appliances, which are designed to function optimally at this voltage. Moreover, circuits rated for 120 volts are equipped to handle the average power requirements of household devices, providing a safe boundary against potential electrical hazards.

While 240 volts and 220 volts are also present in some electrical systems, they are typically reserved for high-power appliances such as electric dryers or ovens. The distinction between these voltages helps ensure that devices are used within their safe operating limits, highlighting the significance of using the correct voltage for specific applications.