Hello: I have an installation where I need to add some IP cameras that use Cat 5e cables to the exterior of a commercial building with a flat roof. It would be much easier to just lay the outdoor rated cat5 on the flat tar roof, and bring all the cables to a central point in the rear of the building and have them enter in one place. Can anyone think of any building or electrical code that would prohibit this? Or even just a general safety opinion. I do wonder if it might be a trip hazzard - though they will be lose enough that they should not really grab your leg if you didn't see them but got underneath one. The other concern I have is if each one would have to be grounded in some way. Thanks!