The Main Types of Cable Trunking Systems

When it comes right down to it, any business needs to have a proper cable trunking system in order to protect data and electrical cables. Without it, there are so many things that could go wrong and result in major issues.

What you might not know is that there are a few key elements to choosing the right system. You also need to know the different types so that you can make the best choice possible to suit your needs.

Plastic Trunking

One of the most popular choices when it comes to cable trunking systems is plastic trunking. The primary reasons are that it is both cheap and simple to install. More importantly, it is just robust enough that it can stand up to daily hazards like moisture and dirt, the enemy of your cable systems. Proper protection is needed no matter the system and plastic trunking gets the job done.

Plastic trunking is perfect for many business applications, providing the perfect blend of flexibility and rigidity. You can go in one direction or the other depending on what is most important. If you need to prioritize routing convenience, you need to go more flexible. If you have a need for greater protection, then something more rigid is necessary.

The most common types of plastic conduit include UPVC and PVC, polyamide, polypropylene, and halogen-free ABS conduit. For skirting installations, flat PVC cable is the best option. Not only that, but black or white plastic trunking is very commonplace when it comes to office installations.

Metal Trunking

Metal cable trunking systems are the most robust and heavy-duty option for your cable trunking needs. Even better, metal trunking comes in a variety of options including cross-sectional areas and a huge range of diameters. It is perfect for handling not only different types of cable but different sizes as well.

For underground and outdoor installations, where moisture is highly prevalent, galvanized steel is the most preferred choice. Other materials may not offer adequate protection or could become susceptible to water damage and rusting. Galvanized steel is more than capable of holding up for the long term in outdoor installations.

Where the cable trunking can be seen, some would rather have stainless steel trunking simply because it looks better. There is nothing quite like the aesthetic of stainless steel. There is also aluminum conduit, which is perfect where you need to keep things lightweight. For installations that run across a ceiling, aluminum would be the better choice.

Metal versions of trunking also come in different profiles. You will find square, round, slim, and flat options. They also come with slotted and fully enclosed installations, whatever you need to disperse heat for proper thermal protection. Slotted installations also allow for far easier access, not to mention being able to more easily visually identify each of the wires.

EMC Trunking

Though it is not nearly as commonplace, there are some installations that require you to consider electromagnetic interference. For these installations, you need to have electromagnetic compatibility (EMC) between the trunking enclosure and the conduit cable. That shielding might not seem important but can play a critical role moving forward.

With a dedicated EMC cabling and shielding, there is essentially a screening effect for the conductors, which helps to minimize interference, lowers the risk of shorting and electromagnetic radiation, and better earthing than other cable trunking types.

Just make sure that you look specifically for electrical trunking systems if you plan to use this type. That’s because you need to meet certain specifications when it comes to cables that require high current carrying capacity.


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