Running Conduit On A Flat Roof

Exterior grade ethernet cables are waterproof and can be buried in the ground without a conduit.

Running conduit on a flat roof. I cannot run it on the side of a parapet. All will help attenuate the let through energy. August 02 2011 09 56 26 am author. If your lucky you will get 10 years service out of roof mounted pvc conduit in florida.

I can tell you real quick like it gets brittle after around 5 years. Does the nec specify a clearance between the bottom of roof decking and electrical conduit. Running conduit through roof reply 5 on. I m a lv contractor and will be installing a cctv system on a building with a flat roof with a parapet.

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. This is important when running the cable up the side of a house or across a roof. The only reason we haven t install emt was because of the salt air. Self cutting or self drilling roof fasten ers can readily penetrate metals of these thicknesses.

Seanb 1 don t forget the coil of cable and add a few ferrite toroids over the cable as well. We are replacing part of the plant roof and some of the 277 lighting conduit runs along the bottom of the roof decking. I am worried about a roofer running a screw into the conduit as they secure the insulation. In the past i ve put down 1 foot long pieces of treated 2x4 every 5 feet and ran pvc conduit.

So i m planning on running all camera wires in pvc schedule 40 either. Although looking at it now the 2008 uses shaded sections for new or modified wording so the thin line might just be for new. But this time i would like to do a neater job. 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.

The system will use cat 6 to each camera and running these wires indoors is impractical in most of the building. Also cutting and roof system removal. Hi currently at the side of our house there is a large utility extension from the garage extending 2 3m into the garden. I m in florida and i have installed thousands of feet of pvc on roof tops.

Can i run it on top or. If you aren t burying the cable choose a waterproof cat 6 cable that has a uv protective jacket to prevent damage from sunlight exposure.