I need to have some Cat5e and RG6 cables installed. It is in a location that will require them to be installed outside. I am having 2 new 220V circuits added (one for a well pump) and was told by my electrical contractor that the same ditch could be used for the low voltage stuff as long as they were in a separate conduit and separated with 6 - 12 inches of dirt.

The 220v circuits will be in their own PVC conduit 24 inches down. Will the 2 conduits and approx. 12 inches of dirt be sufficient to prevent interference in the low voltage wiring? Thanks!