Running Conduit On A Flat Roof

Running conduit through roof reply 5 on.

Running conduit on a flat roof.

Although looking at it now the 2008 uses shaded sections for new or modified wording so the thin line might just be for new. Hi currently at the side of our house there is a large utility extension from the garage extending 2 3m into the garden. 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. We are replacing part of the plant roof and some of the 277 lighting conduit runs along the bottom of the roof decking.

I can tell you real quick like it gets brittle after around 5 years. But this time i would like to do a neater job. At the moment the gutter drain pipe from the roof of the main property is running above the flat roof then is diverted along a drain pipe diagonally along the back external wall of the prerogative to a drain halfway along the property very ugly. I cannot run it on the side of a parapet.

I m in florida and i have installed thousands of feet of pvc on roof tops. Self cutting or self drilling roof fasten ers can readily penetrate metals of these thicknesses. 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. If your lucky you will get 10 years service out of roof mounted pvc conduit in florida.

I have to run a circuit to supply power to a sign across about 50 feet of flat roof. Can i run it on top or. Does the nec specify a clearance between the bottom of roof decking and electrical conduit. Also cutting and roof system removal.

August 02 2011 09 56 26 am author. Exterior grade ethernet cables are waterproof and can be buried in the ground without a conduit. Seanb 1 don t forget the coil of cable and add a few ferrite toroids over the cable as well. All will help attenuate the let through energy.

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. The system will use cat 6 to each camera and running these wires indoors is impractical in most of the building. 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.

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.