Which type of wire is commonly used for residential electrical circuits?

The use of 12 AWG wire for residential electrical circuits is common because it provides a suitable balance between conductor size and the amount of current it can safely carry. Specifically, 12 AWG wire is rated for 20 amps, which is adequate for most standard lighting and receptacle circuits in homes.

Using 12 AWG wire helps ensure that the circuit operates safely within its limits, reducing the risk of overheating and potential fire hazards associated with wires that are too small for the amperage they are carrying. This gauge also allows for more flexibility in accommodating various electrical loads found in typical household settings.

While other gauges such as 14 AWG can be used for lighter circuits (typically rated for 15 amps), and larger gauges like 10 AWG and 8 AWG cater to heavier loads (rated for 30 amps and above), 12 AWG is the most commonly used for resident electrical work, making it the standard choice for ensuring safety and compliance with electrical codes.