What is the typical voltage used in residential wiring?

In residential wiring, the standard voltage used in most countries, including the United States and Canada, is 120/240 volts. This configuration allows for the supply of electrical power for different types of appliances and devices found in households. The 120 volts is typically used for lighting and general household appliances, while the 240 volts supply is utilized for heavier appliances such as electric ovens, dryers, and HVAC systems.

The option of 240/480 volts is more applicable in industrial and commercial settings rather than residential areas, where such higher voltages might be present for specific machinery or equipment. The 100/200 volts listed is not a standard configuration for residential use; it’s lower than typical requirements for household appliances. The 12/24 volts are common in low-voltage applications, such as outdoor lighting or automotive systems, not for standard residential wiring. Thus, the correct choice reflects the actual voltage levels most commonly found in residential electrical installations.