What is SWA cable and where is it used?

SWA cable means Steel Wire Armoured Cable. It is one of the most widely used armoured cable types for fixed power distribution where strong mechanical protection is needed.
A typical SWA cable may include copper or aluminium conductors, XLPE or PVC insulation, bedding, galvanized steel wire armour, and PVC or LSZH outer sheath. It is commonly used for mains power distribution, industrial installations, outdoor wiring, underground cable routes, power stations, commercial buildings, and infrastructure projects.
BS 5467 SWA cables are commonly used for industrial wiring and mains distribution, and may be installed clipped directly to a surface, on tray, in basket, in free air, directly in the ground, in ducts, or embedded in concrete when the installation conditions are suitable.