A metal device box contains one fixture stud two internal cable clamps and two grounding conductors spliced together. To allow for these fittings and conductors a maximum number of conductors allowed in the box by the NEC t ables must be reduced by how many?

A metal device box contains one fixture stud two internal cable clamps and two grounding conductors spliced together. To allow for these fittings and conductors a maximum number of conductors allowed in the box by the NEC t ables must be reduced by how many?