If I put a pvc junction box under the panel to make splices, and have 2" pvc coming in one side from the bottom and 2"pvc going out the other side up to the panel, will the size of the junction box have to be at least 12" since 314.28 (2) says that it must be 6 times the largest raceway entering the box? My other question would be how deep would it have to be? 12x12x12? or could it be 12x12x8 ?? sort of confused on the depth.