Conduit also protects your wires from exposed surfaces such as rough bricks in a basement.
Is conduit required in attic.
It will be easier to repair wires if there is a short in the line.
A loose cable like in the photo above gets caught in the spring mechanism of a pull down folding ladder at the attic opening and frayed.
There are a few rules you need to follow but conduit is not one of them.
I m building a new home outside the city limits in liberty county in texas my electrician ran the main power feed wire from the meter through the exterior wall up into the attic and down into the breaker panel without any conduit.
Always check in with the local building code authority.
I once knew of a town that required all residential circuits be run in conduit.
Code requires that romex be installed in a conduit.
It is not required by the nec in a residential attic.