A Quality, Well constructed Cable which is easily stripped and worked with. 

6mm² copper conductor size, Nominal Overall Diameter 20mm
5 Core Cable with Brown, Black, Grey, Blue, and Green coloured cores as indicators
High quality Class 2 plain annealed stranded copper cores to BSEN 60228:2005 (Previously BS6360)
Insulated with XLPE (Cross linked polyethylene), Bedded with PVC (Polyvinyl Chloride), Armoured with SWA (Steel Wire Armoured) and Sheathed with Black PVC (Polyvinyl Chloride)
Suitable for voltages up to a maximum voltage of 600/1000V
Maximum current of 53A
Suitable for Temperatures between -15°C and 90°C

Steel Wire Armoured Cable, commonly known as SWA Cable, is a hard wearing power cable which is designed for the supply of mains electricity. Suitable for use in power networks, underground, internal, external applications and for use in cable ducting. It can also be connected to an earth which will give the cable further protection. 

The steel wire armour sits below the cable sheath to provide protection to the conductor and insulating layers which means the cable can withstand high stress and be buried directly underground.