What are the typical voltage levels used in residential wiring?

In residential wiring, the standard voltage levels commonly used are 120 volts for most household circuits and 240 volts for larger appliances. This voltage configuration is designed to ensure that typical household devices operate effectively and safely, providing sufficient power for everything from lighting to heating and cooking appliances.

The 120V supply powers standard outlets and fixtures, while the 240V supply is utilized for higher-demand appliances such as dryers, ranges, and HVAC systems. This distinction allows for an efficient allocation of electrical resources, maximizing both safety and performance in various applications within residential settings.

Although other choices suggest different voltage levels, they do not align with the standards used in most residential applications in North America. For example, while 230V is a common voltage in some regions outside of North America, the specific standard voltages used in North American residential wiring are 120V and 240V. Thus, the choice that accurately reflects typical voltage levels for residential wiring is indeed 120V and 240V.