I need to add a circuit and the my panel is outside. The easiest way to run the cable would be to run a conduit vertically from the panel and up through the soffit. Then I would properly run the cable through the attic to. I have two questions.
My question is, what is the proper way to install the conduit? Does the conduit need to extend a certain height up into the attic?
Second, it seems that with much debate, Romex shouldn't be run through a short conduit run. Is it OK to run it since it would be just 6' down to the panel or not? If the answer is no, would I just run the Romex in the attic to a junction box. Then have THHN wires run through the conduit to the exterior of the house and down to the panel?