Run Romex Through Attic Roof Truss Web

A pull down attic ladder does not count.

Run romex through attic roof truss web.

Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. The carpenter told me i cannot drill these trusses to run my romex. 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. The nec requires you to install romex following along the framing lumber or along running boards.

You are not allowed to clothes line from truss to truss with an open truss design. It is using 2x4 roof trusses. I hope i did not mess up. I have already drilled 7 8 holes in the trusses.

If the attic is accessible by permanent stairs or ladder any cable running across the top of joists will have to be protected. So i thought an attic would be no different. 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. Can i run romex on the underside of the joists with cable staples every 24 inches.

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. The second floor of my shop is built with attic trusses which integrate the floor joists with the truss. Cable run across the top of joists. I know in a basement they have to be run through the joist if smaller than 8 3 or 6 2.

I am installing some led lights in my shop and don t want to drill holes into the floor joists in order to run the romex.