xformer
Senior Member
- Location
- Dallas, Tx
- Occupation
- Master Electrician
Good Day,
Most of my electrical work has been commercial with little residential. So here goes my question. When running non-metallic sheathed cable in a dwelling unit, must the ampacity of the conductors be derated when multiple cables are ran through the same hole in the wall stud, ceiling, or floor joist?
Most of my electrical work has been commercial with little residential. So here goes my question. When running non-metallic sheathed cable in a dwelling unit, must the ampacity of the conductors be derated when multiple cables are ran through the same hole in the wall stud, ceiling, or floor joist?