The cable duct can be used in indoor building installations as well as in electrical panels. Its perforated structure allows it to be cut easily. Several different models are available for a wide range of applications. Before describing the types, let’s have a look at the definition and selection parameters of cable ducts.
The cable duct is a channel system that keeps the electrical cables together. The cable duct enables the transmission of the cables safely. The cable duct is also referred to as the wiring duct, electrical cable ducting, and cable tray.
The general purpose of the cable duct is to provide a clear, protected pathway for a cable. Cable duct provides mechanical protection to cables, as well as protection from moisture or chemicals and even, in some cases, animals.
When selecting a cable duct, these parameters should be considered:
- The route to be mounted should be measured.
- The total cable weight should be measured.
- The width of the carrier that can carry the specified cable load and the side heights and the distance between the supports should be measured.
- The corrosion resistance needs of the geography where the application will be made should be determined.
- The temperatures that will occur in the installation should be taken into consideration.
- Other application-specific situations should be considered.
Cable Duct Types
There are several types of ducting that can be used for electric cables, including:
1. Thermoplastic cable ducts
The advantages of thermoplastic ducts are:
- Do not corrode. They are durable.
- Prevent a short circuit.
- Easy to transport.
- Easy to assemble, cut, and drill.
- Have a decorative appearance.
- Can be produced in different colors.
Halogen-free thermoplastic cable ducts are ideal for use in a wide range of environments and conditions. For instance, in malls, movie theaters, theaters, schools, congress centers, areas with special safety requirements (such as underground zones, subway stations, bank vaults), various types of industrial plants (petrochemical, off-shore platforms, power plants) and, more generally, in applications involving switchboards.
2. Metal cable ducts (Cable tray)
A cable tray is a system that enables the cables to pass through the ceiling or wall to be carried safely and in one line. Cable trays are produced in different widths and lengths as U profiles from perforated sheets. Manufactured from carbon steel, hot-dip galvanized after fabrication the cable trunking is resistant to harsh solid and performant environments. They are ideal for all types of industrial applications, even in special conditions: for example, where there are high concentrations of humidity or salinity, where acids are used, or when very thick or large quantities of cables are required (such as in the petrochemical and iron and steel industries, power stations and underground or maritime installations)
3. Busbar distribution systems
The busbar system is an energy distribution system that provides a busbar connection with channels mounted on the ceiling. With this system, lighting and illumination installation can be done separately or at the same time.
4. Fiberglass ducts
Fiberglass duct is lightweight, durable and resistant to corrosion and heat. It is often used in high-temperature applications such as power plants or industrial ovens.
5. Concrete ducts
The concrete duct is a rigid and heavy option that is commonly used for large-scale cable installations such as in underground tunnels or bridges. It provides excellent protection against physical damage and is also fire-resistant.
6. Plenum ducts
Plenum duct is a type of fire-resistant ducting that is designed to be installed in air-handling spaces such as the area above suspended ceilings. It is made of a special type of plastic or metal that has been tested and approved for use in these applications.
7. Armored ducts
An armored duct is a type of metal ducting that has a protective metal sheath around it. This sheath provides extra protection against physical damage making it a good choice for installations in areas where cables are likely to be exposed to impact or other hazards.
8. Composite ducts
The composite duct is a type of ducting that is made of multiple layers of different materials such as fiberglass, resin and metal. It is often used in applications where multiple types of protection are required such as in high-temperature and high-pressure environments.
The choice of ducting material will depend on various factors such as the type of installation, the environment and the level of protection required. It is important to consult with a professional electrician to determine the most suitable type of ducting for your specific application.