In terms of box volume, how much volume is allocated for each 12 AWG conductor?

Each 12 AWG conductor requires a specific volume allocation within an electrical box to ensure that it is not overcrowded, which could lead to overheating and potential hazards. The National Electrical Code (NEC) specifies that for each conductor, a minimum of 2.25 cubic inches of volume must be allocated. This is to accommodate the safe installation and functioning of the electrical wiring, ensuring sufficient space for the conductor to be properly managed without introducing risk during operation or further connections.

Therefore, the choice indicating 2.25 cubic inches aligns with these safety standards. This allocation helps electricians determine the appropriate size of electrical boxes when multiple conductors are present, taking into account additional factors such as the volume needed for devices, fixtures, and other conductors. Understanding these requirements is critical for anyone working with electrical installations, as it directly affects safety and compliance with electrical codes.