Electrical Conduit

An electrical conduit is an electrical piping system used for protection and routing of electrical wiring. Electrical conduit may be made of metal, plastic, fibre, or fired clay. Flexible conduit is available for special purposes.

Conduit systems are classified by the wall thickness, mechanical thickness, and material used to make the tubing. Materials may be chosen for mechanical protection, corrosion resistance and overall economy of the installation (labour and material cost). Wiring regulations for electrical equipment in hazardous areas may require particular types of conduit to be used so as to provide an approved installation.

The main purpose of conduit is to insulate the electrical cabling in domestic and commercial use from factors such as UV, Rodents and moisture.

Metal conduits

Rigid Metal Conduit (RMC) is a thick threaded tubing, usually made of coated steel, stainless steel or aluminium.

Galvanized rigid conduit (GRC) is galvanized steel tubing, with a tubing wall that is thick enough to allow it to be threaded. Its common applications are in commercial and industrial construction.

Intermediate Metal Conduit (IMC) is a steel tubing heavier than EMT but lighter than RMC. It may be threaded.

Electrical metallic tubing (EMT), sometimes called thin-wall, is commonly used instead of galvanized rigid conduit (GRC), as it is less costly and lighter than GRC. EMT itself may not be threaded, but can be used with threaded fittings that clamp to it. Lengths of conduit are connected to each other and to equipment with clamp-type fittings. Like GRC, EMT is more common in commercial and industrial buildings than in residential applications. EMT is generally made of coated steel, though it may be aluminium.

Tubecon cold forms, stocks and delivers galvanized and black steel conduit as well as accessories. The link below will divert you to our conduit section under our steel product range. 

Why does everyone not use PVC conduit?

PVC conduit is the more cost effective between PVC and Steel conduit. This is used predominantly for residential purposes. Buildings taller than 2 stories in South Africa are forced by law to make use of steel electrical conduit. Therefore most tenders in South Africa specify the use of galvanized or black steel conduit for the building of Hospitals, Prisons, PowerStation's etc.