Run Romex Through Attic Roof Truss Web

Nothing in the code book that i am aware for cable run on the bottom of rafters where they are not subject to mechanical damage.

Run romex through attic roof truss web.

I know in a basement they have to be run through the joist if smaller than 8 3 or 6 2. I understand that this is what the code says but obviously the romex is. A pull down attic ladder does not count. Only 1 5 required from roof sheeting.

If the sites that you want to run wire to are on the outside of the house you should not need to drill a new hole. Running boards are for cables run on the bottom edge of joists or over rafters when they are subject to mechanical damage less then 3 ft. He is stating that the romex in the attic that is laying on top of the trusses must be secured by a staple tiewrap etc. I cannot find this specifically in code so here is my question.

I think some folks are thinking you mean knob and tube wiring since you said exposed. I took it to be the cable romex was going to be exposed. This will protect the wiring from being accidentally snagged. I want to install an attic ladder and i understand that code implies that electrical has to be run where it will not be under foot.

Protecting the cable is as simple as installing substantial guard strips which can simply be a 1x2 furring strip on each side of the cable if there s no permanent stairs or ladder this protection only has to be provided to. Same as vertical studs. Romex electrical wiring running over the roof joists in attic all of the upstairs wiring is running over the roof joists instead of through them. Cable run across the top of joists.

When romex is run across rafters in an open unfinished attic it is my position that a raceway of some kind 1x3 s or even 2x4 s should first be attached across the affected rafters perhaps 3 to 4 above the joists then the wiring be stapled to the raceway. I have recently received a notice from one of my inspectors about art. An attic that is accessible which is defined by the nec as having a permanently installed stair or ladder in place must have protection for any cables that run across the top of the attic floor joists or within 7 feet where they run across the face of rafters or studs. I hope i did not mess up.

If the attic is accessible by permanent stairs or ladder any cable running across the top of joists will have to be protected. Ed beal jul 19 17 at 19 08. When cutting through drywall from the interior of a room use a utility knife and cut carefully you don t want to drill through a hidden wire or the paper backing of the attic insulation. So i thought an attic would be no different.

I have already drilled 7 8 holes in the trusses.