Types Of Electrical Conduit And Its Purposes - LCETED -lceted LCETED INSTITUTE FOR CIVIL ENGINEERS

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Aug 26, 2020

Types Of Electrical Conduit And Its Purposes - LCETED


An electrical conduit is a pipe used to secure and supply electrical wiring in a building or structure. Conduit is usually supplied in place of hidden and open wiring or damage. An electrical conduit is usually made of metal, plastic or fiber. They can also be classified based on the thickness of the wall. Via options depend on their type of application, application, national electrical code (NEC) etc.

Electrical conduit mainly classified into two types which are listed below

1. Metallic Conduit
2. Non-Metallic Conduit (Mostly PVC Conduit)

Electrical Conduit And Its Purposes

We will elaborate these two types below

Metallic conduit made from a metal material. There are several types of metal conduit which is listed below

a.   Rigid Metal Conduit (RMC)

b.   Intermediate metal conduit (IMC)

c.    Flexible Metal Conduit (FMC)

d.   Liquid-Tight Council (LTC)

e.   Electrical Metal tubing (EMC)

f.     Electrical Non-Metal tubing (ENMC)

Rigid Metal Conduit (RMC)

What is Rigid Metal Conduit (RMC)?
Rigid Metal Conduit (RMC) is a thick-heavy walled threaded pipe that is often made of coated steel, galvanized steel or aluminum. This type metal pipe usually provides reliable protection from external damage and can also provide structural support for electrical cables, panels and other devices.

Used In: Typical Used Outdoors

Intermediate Metal Conduit (IMC)

What is Intermediate Metal Conduit (IMC)?
It is a thin and light version of the RMC. this is a heavy steel, designed for external exposure and solid connect. and It is designed to protect insulated electrical conductors and cables. IMC is approved for use in all applications compared to RMC. Today IMC is more commonly used in new construction because intermediate metal pipes (IMC) are lighter and easier than RMC

Used In: New outdoors construction projects

Flexible Metal Conduit (FMC)

What is Flexible Metal Conduit (FMC)?
It has a spiral structure that simplifies the flow through walls and other structures. Flexible metal hoses are easy to bend without using other electrical equipment or elbows and threaded seals. it is very easy to install. Flexible metal pipes (FMC) are useful in areas where rigid channels are difficult to install. Standard FMC is used in dry indoor areas.

This is ideal for vibration equipment such as heating and air conditioning units

Used In: dry indoor locations

Liquid-Tight Flexible Metal Conduit (LFMC)

What is Liquid-Tight Flexible Metal Conduit (LFMC)?
Its is like a flexible metal pipe (FMC). LFMC is a flexible metal pipe covered with waterproof plastic coating. LFMC is extra flexible, which is commonly used in outdoor equipment such as air conditioner units. It provides mechanical and moisture protection for electrical wire.

Used In: Outdoor equipment

Electrical Metal Tube (EMT)

What is Electrician Metal Tube (EMT)?
Its another example of rigid electrical pipes, its usually made of galvanized steel (GMT) or aluminium. The Electric Metal Tube (EMT) is Light then RMC. Installing EMT is also easy.
Its available in sizes like 1/2 inch (12.7mm), 3/4 inch (19.05mm) and 1 inch (25.4mm).

Used In: Exposed Indoor wiring

Electrical Non-Metal Tube (ENMT)
Its another example of rigid electrical pipes, its usually made of PVC

Used In: Indoor walls

2. Non-Metallic Conduit

What is Non-Metallic Conduit?
The non-metallic Conduit (NMC) is can be rigid and flexible type. Non-metallic Conduit are generally made from PVC. The same fittings are often used for metallic and non-metallic routes. Advantages of non-metallic conduits are moisture resistance, corrosion resistance and ease of installation.

Used In: Corrosive Environments

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