Running Conduit Through Roof

Running wires inside rigid conduit.

Running conduit through roof.

Lic conduit embedded within or directly underneath roof assemblies. Seanb 1 don t forget the coil of cable and add a few ferrite toroids over the cable as well. Conduit runs are hidden under the panels and inside attics not run over the top of the roof. August 02 2011 09 56 26 am author.

Although looking at it now the 2008 uses shaded sections for new or modified wording so the thin line might just be for new. Rigid conduit with an outside diameter of 3 4 in and a fish tape long enough to reach through the buried pipe. We have literally hundreds of good photos. Occasionally due to attic configuration or other challenges some visible conduit is unavoidable.

Running a vent pipe out of the roof takes some careful preparation. If the vent pipe isn t installed properly the roof may leak through or around the pipe penetration leading to costly repairs. Running conduit through roof reply 5 on. Mounting conduit on existing flat roof any time you see a thin black line to the left of a paragraph in the nec it means that it s new or the wording has changed.

Either rigid or flexible conduit protects the wires and is used in exposed locations such as along the exterior surface of a wall. These hangers hold the conduit off the wall so it can run straight into boxes with no offset. Remove the conduit center the strap between the marks and attach it with a screw. A note on conduit.

All will help attenuate the let through energy. It is also used in unfinished areas like basements crawlspaces and attics and for surface mounted installations outdoors. Self cutting or self drilling roof fasten ers can readily penetrate metals of these thicknesses. To run the wires inside rigid conduit you ll need a hacksaw a pipe bender capable of bending 1 2 in.

Vent pipes provide this air by running outside the structure of the house. Also cutting and roof system removal. To install conduit hangers hold the conduit against the wall where you want it and make a mark on the top and bottom where the hanger will go. By way of comparison the wall thick ness of 1 2 inch thick metallic conduit is comparable to the metal thickness of a 20 gauge steel roof deck.