Does 8 3 Wire Thru The Attic Need A Conduit

In my area they allow the ac run to be romex nm like 8 3 g which is jacketed cable to be run through the attic without conduit because it is packaged together already with a jacket around it they consider the attic to be inaccessible indoor location.
Does 8 3 wire thru the attic need a conduit. It is also used in unfinished areas like basements crawlspaces and attics and for surface mounted installations outdoors. I have always been led to believe that single strand wire needs to be run in conduit and may not be run inside the walls of a home or building. The national electrical code has specific regulations for how many conductor wires can fit into within a conduit of each diameter size. However after looking in the code book article 300 3 a states.
I m building a new home outside the city limits in liberty county in texas my electrician ran the main power feed wire from the meter through the exterior wall up into the attic and down into the breaker panel without any conduit. Either rigid or flexible conduit protects the wires and is used in exposed locations such as along the exterior surface of a wall. It may be easier to replace wires in an existing application when it is installed in conduit. It is often easier to fish your wires through the smooth lining of the conduit than through random holes in walls.
This will protect your wiring from damage by exposure or rodents. Pulling wires through the clips is much easier than pulling wires through drilled holes and you save time because 4. Of wire they support. Use a splice box when installing.
Electrical conduit is metal or plastic pipe through which electrical wires are run. Some people might think that is expensive but this product is a tremendous time saver. A conduit that will be used for an electrical project must be approved for the application. A 1 2 inch conduit can hold as many as nine 12 gauge wires or twelve 14 gauge wires.
The clips allow easy access if you need to run more wires and cost 40 for every 8 ft. I am adding a sub panel in my attached garage and was going to run 6 3 romex from the outside main panel in the crawlspace underneath the house up through the floors into the garage. The amount of wire fill inside any electrical conduit does not imply how many wires can be stuffed into the conduit but rather how many wires of the right type may be safely installed to prevent overheating of the electrical wiring. Single conductors specified in table 310 104 a shall only be installed where part of a recognized wiring method of chapter 3.