What is the minimum size box in cubic inches needed to contain the following; 3-12 AWG phase conductors, 3-12 AWG grounded conductors, 3-12 AWG grounding conductors and 1 GFIC.

What is the minimum size box in cubic inches needed to contain the following; 3-12 AWG phase conductors, 3-12 AWG grounded conductors, 3-12 AWG grounding conductors and 1 GFIC.