SWA Cable VS Armoured Cable

Introduction:

When it comes to electrical installations, choosing the right type of cable is crucial for ensuring safety and efficiency. Two commonly used options are SWA (Steel Wire Armored) cable and Armoured cable. While both types provide enhanced protection, there are distinct differences between them. In this article, we will explore the disparities between SWA and Armoured cables, highlighting their unique features, applications, and benefits.

Construction

SWA Cable:

SWA cable, also known as steel wire armored cable, features a design that consists of several layers. It comprises a conductive core made of copper or aluminum, insulated with a layer of PVC (Polyvinyl Chloride). Surrounding the insulation is a layer of steel wire armor, which provides mechanical protection. Lastly, an outer sheath of PVC or LSZH (Low Smoke Zero Halogen) material encases the entire cable.

Armoured Cable:

Armoured cable, on the other hand, is constructed slightly differently. It includes a core made of copper or aluminum, similar to SWA cable. However, instead of steel wire armor, Armoured cable utilizes a layer of steel tape or steel wire braid for mechanical protection. The core is then insulated with PVC or XLPE (Cross-linked Polyethylene) material and covered by an outer sheath.

Applications

SWA Cable:

SWA cables are commonly used in various applications, including underground installations, outdoor electrical systems, and industrial environments. The steel wire armor provides robust protection against mechanical damage, making it suitable for areas where the cable may be exposed to external forces, such as construction sites and underground utility networks.

Armoured Cable:

Armoured cables find extensive applications in environments where extra protection against physical damage and rodent attacks is required. These cables are often used in commercial and residential buildings, power distribution systems, and high-risk areas prone to damage, such as underground ducts or areas with heavy foot traffic.

Advantages and Disadvantages

SWA Cable:

Advantages:

Excellent mechanical protection due to the steel wire armor.

Suitable for outdoor and underground installations.

Resistant to moisture, chemicals, and UV radiation.

Durable and long-lasting.

Disadvantages:

Relatively bulky and heavier compared to other cable types.

Higher installation costs due to the armored construction.

Requires specialized tools for cutting and termination.

Armoured Cable:

Advantages:

Provides high mechanical strength and resistance to damage.

Offers enhanced protection against rodent attacks.

Versatile and can be used in various environments.

Easy to install and terminate.

Disadvantages:

Limited flexibility due to the armoring.

May be costlier than non-armored cables.

Armoring may add weight to the cable, making it less suitable for certain applications.

Conclusion

In conclusion, SWA and Armoured cables are both reliable choices for electrical installations that require enhanced protection. SWA cables excel in situations that demand robust mechanical defense, such as outdoor or underground applications. On the other hand, Armoured cables are preferred when additional shielding against physical damage and rodent attacks is necessary. The choice between the two depends on the specific requirements of the project, considering factors such as the installation environment, potential hazards, and budget. By understanding the differences between SWA and Armoured cables, you can make an informed decision and ensure a safe and efficient electrical system.

Remember, when it comes to selecting the right cable, it is always advisable to consult with a qualified professional to determine the most suitable option for your specific needs.