Steel Wire Armoured Cable (SWA) is a hardy power cable designed to supply mains electricity. It is typically used for underground systems, cable networks, power networks and a variety of other outdoor and indoor applications. SWA Cable 3 Core has three conducting cores – live, neutral and earth. Triple core SWA cable is suitable for Class I or Single Insulated applications that require an earth connection. Armoured XLPE mains cable conforms to British Standard BS5467 suitable for power networks.