What size range do aluminum or copper-clad aluminum conductors in nonmetallic-sheathed cable typically cover?

Aluminum or copper-clad aluminum conductors in nonmetallic-sheathed cable are typically found in a size range of 12 to 2 AWG. This range is significant because it meets various electrical demands for residential and commercial wiring applications.

Conductors sized at 12 AWG are commonly used for circuits that require a moderate current capacity, such as lighting and receptacles, while the 2 AWG conductor is suitable for heavier loads, like larger appliances or electrical service feeds. Using a range that starts at 12 AWG allows for compliance with safety standards while providing sufficient capacity for most common installations.

The specific choice of 12 to 2 AWG ensures that different wiring needs across various settings can be addressed, enhancing flexibility and functionality in real-world applications.