National electric code free online?
I am installing a 300-pair unlisted (OSP)communications cable between 2 buildings. I intend to bury 4" Schedule 40 PVC conduit in a trench between the buildings. In one of the buildings I have to run the cable about 200 feet through a crawl space to the telecom room. The customer does want a splice case in the crawl space and is willing to pay for conduit. I have been told that the unlisted cable can be intalled inside the building for more than 50 feet as long as it is in conduit. I have 2 questions, 1) is that information correct? 2) If so does the conduit have to be EMT or would PVC be acceptable?