What is the smallest conductor permitted for general wiring made of copper?

What is the smallest conductor permitted for general wiring made of copper?

• A. 12
• B. 10
• C. 8
• D. 14

Answer: (D)

The smallest conductor permitted for general wiring made of copper is 14 AWG (American Wire Gauge). This size is accepted for various residential applications, particularly in lighting and general purpose outlets. It is designed to safely handle a typical load while providing adequate protection against overheating.

Using 14 AWG wire allows compliance with safety standards that aim to prevent overcurrent conditions, ensuring that circuits function properly without risk. This gauge strikes an appropriate balance between current-carrying capacity and physical properties, making it a common choice in residential wiring applications.

The other wire sizes mentioned either exceed the minimum requirement for general wiring or are typically reserved for specific applications that require higher capacity, thus rendering them unsuitable for the role typically fulfilled by the 14 AWG conductor in residential contexts.