Future circuit access tube
I moved into my new home two years ago. During our final walk-through I asked the construction supervisor about a corrigated plastic tube, about an inch in diameter, that was protruding into the attic by about 8 feet. It looked like it went down through the outer frame towards the exterier circuit breaker panel. he told me it was there to provide easy access to the panel should I ever want to add a new circuit. Now I want to add a new circuit to add extensive lighting to the attic since I added flooring for storage. When I look at the panel I can't see anything resembling the other end of the tubing. How do I access the tubing from the panel end so I can run my cable?