What Is 3 Core Armoured Cable Used For Electrical Applications?

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The 3 core armoured cable is also commonly known as the 3-core steel wire armoured (SWA) cable. In electrical circles, SWA cables also have additional words used in their specifications. For example, you might see a specification that says armoured cable 16mm 3 core, BS546/BS6724. This means the cable complies with requirements of those specific British Standards of cable manufacture and testing.


The 3 core armoured cable is known as a power and auxiliary controlling cable and is used to transport mains power to residential or commercial installations. These cables may also be called 3 core mains cable, and are classified as hard-wearing cables, and used in applications where there might be risk to damage to the cable, or there is a danger of UV exposure.



The usual 3 core steel wire armoured cable (SWA) is ideal for external electrical applications. Because such applications often must be exposed to the forces of nature, SWA outdoor 3 core cable has an added layer of external casing (usually wire meshing) that delivers greater mechanical protection to the inner core of this type of 3 core cable.
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