ECN Forum Forums Code Related Discussion NEC & other Code issues Mixed cables and conductors in a raceway?

Greg,

Is the EMT outside? Then you can cite, no RX is allowed in a wet location.

If the EMT is inside, you can ask the EC for a UL listing for approved use of the RX inside of EMT.

Will you have to derate the conductors because of a cable installed inside of EMT.

I would use an EMT/PVC to protect a piece of cable when running through a floor or along a wall, etc. However my rule of thumb was any length of pipe 10' or less could be used for physical protection, but not over 10'. Then we would just run pipe.