I don't think that anyone here would argue if we use a small piece of pipe to protect a piece of RX. However the big question is, When is the pipe too long? A 4' piece is OK? Then how about a 10' lentgh? Maybe 20 or 30 feet? When do we stop. I saw a job where someone ran 60-90 feet of PVC with a 12-3 RX inside of the pipe. Is that too much? What is the code section? Now if it goes underground, you can argue the RX in a wet location like ElectricAl stated. However how much pipe is too much? Maybe you could ask the AHJ?
Harold
