Run Romex Through Roof Truss Web

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 spaces that are accessible the cable shall be protected by substantial guard strips that are at least as high as the cable.

Run romex through roof truss web.

Plus engineered structural members such as the bottom chord of roof trusses cannot be bored without an engineer s approval. One other way that nm cables in an attic become damaged is when a homeowner lays down boards or pieces of plywood directly over the cables compressing them against the top. Hi all i have to run some romex in my attic. Rigid conduit with an outside diameter of 3 4 in and a fish tape long enough to reach through the buried pipe.

Of sheathed cable into the box and staple the cable photo 8. Attics or roof spaces shall be installed as specified in 320 23 a and b. Pulling wires through the clips is much easier than pulling wires through drilled holes and you save time because 4. Of cable and thread it through the holes from one box to the next.

Some people might think that is expensive but this product is a tremendous time saver. Of wire they support. My attic is non accessible so i know for a fact that i must protect the romex with guard strips or bore holes 1 25 from the face of the joists when running perpendicular to the joists and when i run parallel i must staple the romex to the face of the joists. Where run across the top of floor joists or within 2 1 m 7 ft of the floor or floor joists across the face of rafters or studding the cable shall be protected by substantial guard strips that are at least as high as the.

So we most often see guard strips installed. The clips allow easy access if you need to run more wires and cost 40 for every 8 ft. To run the wires inside rigid conduit you ll need a hacksaw a pipe bender capable of bending 1 2 in. I would run the wire along the bottom opposite side of metal roof of the 2x4 s that run perpendicular to the trusses.

Thread the cable through the holes. Straighten about 12 ft. That way the wire is in a protected underside corner where nothing could hang on top of it as it crosses the truss. When you reach each new box follow the stripping procedure shown in photo 7 push the conductors and about 1 4 in.

Pick a board that runs close to the corner webbing of the truss if possible. I did a lot of reading about it but am confused about the best way to do it. A where run across the top of floor joists. Never ever drill through trusses.

Thursday february 13 2020 exposed nm nmc and nms cable are allowed to be run in one and two family dwellings their attached or detached garages and their storage buildings by the national electrical code nec 334 10 and 334 15.