What voltage does a standard household circuit usually operate at?

A standard household circuit typically operates at 120 volts. This voltage is widely used in residential wiring for powering common household appliances and lighting fixtures. The design of the electrical system takes into account safety and compatibility with devices that are commonly used in homes.

120 volts is considered a safe voltage for general use, allowing for effective operation of appliances without posing excessive risks. This voltage level is sufficient to power most household devices like lamps, televisions, and kitchen appliances.

In contrast, higher voltages, such as 240 volts, are reserved for larger appliances that require more power, such as dryers and ovens. The significantly higher voltages of 480 and 600 volts are used in industrial settings and are not typical in residential areas, as they pose greater risks and require specialized equipment to handle safely.