Run Thhn Through Attic

Yes you can use metallic or non metallic conduit but it must be electrical conduit.

Run thhn through attic.

The staple gun should be loaded with wire staples designed for holding the size and type of wire you are running. Now i am being asked for a code reference stating thhn can not be run inside residential walls without protection. Put an lb behind the panel to make the turn into the panel and use sweep 90 s for the turns from vertical to horizontal at the rafters. A where run across the top of floor joists.

Other types of wire have a sticky rubber sheathing that makes them almost impossible to pull. Bring all of the wire up into the attic. Ok as an electrician i have always believed thhn wire could not be run in walls etc. Yes you can tie pvc conduit into a metallic box.

No you cannot run thhn open the same as you would nm cable. If you choose to run pvc for protection above the rafters then thhn wire is the correct product to use inside the pvc. Where run across the top of floor joists or within 2 1 m 7 ft of floor or floor joists across the face of rafters or studding in attics and roof. Thhn thermoplastic high heat resistant nylon coated is the best wire for pulling through pvc conduit.

Stranded thhn is used on most commercial jobs it s more flexible than solid wire which makes it easier to pull and it doesn t spring back when. Personally to do what you propose i think once you are done doing it all in conduit you ll wish you had spent the 100 on romex.