Flexible conduit ends buyer tips
3 min readSearching to buy some top quality plastic flexible conduit? Here are some tips and extra details helping you to make the best pick. Electrical nonmetallic tubing (ENT) is flexible corrugated plastic tubing that is moisture-resistant and flame-retardant. It is easy to bend and installs with snap-lock or glued plastic fittings. Unlike EMT, non-metallic tubing cannot installed in exposed locations, so it is commonly used inside walls. In addition to installation in standard wood- or metal-frame walls, ENT can be installed inside concrete block structures and can be covered with concrete. Due to the blue color of one common brand of this conduit, ENT is nicknamed “smurf tube,” after the Smurfs cartoon characters.
Rigid polyvinyl chloride conduit is plastic tubing that’s sort of a thin version of PVC plumbing pipe (and is usually gray instead of white). It can be heated and bent to change direction but is more commonly routed with elbow fittings. Connections are solvent-glued, similarly to the way PVC plumbing pipe is handled. The glued connections make the raceway watertight, so PVC can be used for outdoor and underground applications, as well as for dry and even corrosive locations. Because PVC is nonconductive, this conduit cannot serve as a ground path.
Thin-wall conduit is sold in ten-foot lengths in either one-half inch or three-quarter inch (outside) diameter. The one-half inch conduit can contain four No. 14 wires or three No. 12 wires. Three-quarter inch conduit accommodates four No. 10 or five No. 12 wires. These wire capacities are for individual wires, not pairs. The wires used are the same as the individual conductors found in steel armor cable and plastic sheathed cable. Wires in conduit must follow standard coding. In a two-wire electrical circuit you need one black wire, one white wire, and one ground wire. See even more information on stainless steel flexible conduit.
The flexible metallic tubing (FMT) is made to give great flexibility and includes a metallic tube-like design. It really is very easy to route or shape to fit probably the most difficult areas. That is why it is great to utilize on the do-it-yourself projects where it is much better to not join multiple components of Stainless Steel Flexible Conduit together. Also, this kind of tubing does not feature any form of waterproof protection.
There are strict regulations in dealing with the fill factor. A cross-sectional area of the conductors inserted would be measured and the code would determine the percent of conduit which could be filled. A conduit can never be filled 100 percent as it is not safe. The code has determined how wires and bundles of wires can safely run through a given flexible conduit. The table does not address any difference in high or low voltage cables so you can apply the table for both uses. Have this information readily available when shopping for conduits.
CorrugatedConduit.com is a leading supplier of flexible conduit located in Kowloon, China. We have 15 years cooperating qualified manufacturer in mainland. Because of our good quality control management and large volume we are able to sell you the best flexible conduit at competitive prices. Read even more details at corrugated flexible conduit.