Which NEC table is used to determine the minimum size for a standard device box with identical AWG conductors?

The correct choice identifies Table 314.16(A) from the National Electrical Code (NEC), which is specifically used to determine the minimum size of a standard device box when there are identical American Wire Gauge (AWG) conductors present. This table provides values that account for the number of conductors and their size, ensuring that the box is adequately sized to accommodate the conductors without overcrowding.

Proper sizing of device boxes is crucial for safety and functionality; it prevents overheating and damage to the wires and maintains compliance with codes. This table considers both the number of conductors entering the box and the conductor size, allowing for the appropriate selection of the box size to maintain safe electrical practices.

The other tables listed serve different purposes within the NEC. For instance, Table 314.16(B) focuses on box fill calculations involving varying sizes of conductors, while Table 314.17 addresses the volume allowances for support fittings. Table 314.15 relates to box fill calculations in scenarios involving multi-gang boxes. Understanding the specific applications of each table is key for ensuring compliance with electrical installation standards.