Smurf tube is corrugated PVC flexible tubing used to provide an easy method of upgrading structured wiring systems. The tube is run from the distribution panel to each outlet during the prewiring construction phase. Retrofit wiring can easily be pulled through the tubes without painstaking cable snaking.Click to see full answer. Likewise, people ask, what is electrical nonmetallic tubing?Electrical Nonmetallic Tubing (ENT) coil is a flexible raceway for use in walls, floor and permanent or dropped (free air only) ceilings. ENT is lightweight, hand bendable and free from sharp edges, which reduces installation time and save money.Secondly, what is ENT electrical conduit? Rigid nonmetallic conduit (RNC) is a non-metallic unthreaded smooth-walled tubing. Electrical nonmetallic tubing (ENT) is a thin-walled corrugated tubing that is moisture-resistant and flame retardant. It is pliable such that it can be bent by hand, and is often flexible although the fittings are not. Similarly, where can ENT be used? ENT can be used in place of EMT, Rigid Galvanized Steel, AC or MC/ cable and NM cable. Just refer to Section 362.10 of NEC (see Section 10 of this manual.)Can you bury flexible conduit?Not all types of conduit can be buried in the soil. EMT (Electrical Metallic Tubing) and flexible “Raintite” are not considered suitable for burial. A thicker-walled PVC conduit (called Schedule 80) is required where the conduit is exposed above grade (above the soil) on the side of the house and/or garage.