Searching to buy the best flexible metal conduit? Here are some recommendations and extra details helping you to make the best pick. EMT is installed with couplings and fittings that are secured with setscrew or compression-type fasteners. The tubing itself is not threaded like RMC and IMC. Common sizes of EMT include 1/2-inch, 3/4-inch, and 1-inch. It is commonly used for exposed indoor wiring runs in residential and light commercial construction. If installed outdoors in exposed locations, it must be assembled with special watertight fittings.
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.
Intermediate Metallic Conduit or IMC is lighter weight, metallic conduit and is rated as stronger than other rigid conduit. IMC was first produced by Allied Tube & Conduit. IMC, provided in both threaded IMC and non-threaded IMC forms, is a rigid metallic conduit tubing, typically hot-dipped galvanized steel or stainless steel. The interior of galvanized steel IMC is usually coated with an anti-corrosion layer. Threaded IMC is joined by threaded couplings, C condulets, sweeps and bends. The tubing is cut with a pipe cutter or tubing cutter, and then threads cut using a thread cutting tool. When cutting IMC, take care to remove burrs on the tubing interior that would otherwise damage electrical wires being pulled through the conduit. Find more information at SS flexible conduit.
The liquid tight flexible non-metallic conduit (LNFC) is really a reliable option for a wide range of applications. It is built to be really hard-wearing and protective having the ability to give defense against water and flames. Plus, certain LNFC may be manufactured with multiple layers to provide extra strength. This is basically the most practical form of Plastic Flexible Conduit Fittings to make use of in locations which might be seen as potentially hazardous.
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.
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