SWA cable, the steel wire armored cable is power and auxiliary control cable, designed for use in the main power supply.
Used for underground systems, cable networks, power networks, outdoor and indoor applications, and cable ducting.
The SWA cable can also be referred to as power cable and armored cable.
You will frequently see the term BS5467 or BS6724 when referring to an SWA cable.
These phrases mean that the SWA cable meets the British Standards requirements, for both construction and testing.
Construction of an SWA Cable
The typical construction of SWA PVC (Polyvinyl Chloride) cable is as follows:
Conductor: Class 2 stranded plain copper conductor to BS EN 60228:2005
Insulation: XLPE (Cross-Linked Polyethylene)
Bedding: PVC (Polyvinyl Chloride)
Armoring: SWA (Steel Wire Armour)
Sheath: PVC (Polyvinyl Chloride)
Sheath Colour: Black (Carbon loaded for UV stability)
Voltage Rating: 600/100V
The SWA Cable is designed to have mechanical protection, which is why the cable is often used for external use.
The Armour is used to reduce any risk of the cable getting pinched or damaged.
The steel is used to protect the armored cable.
SWA cables are heavy, which makes them extremely difficult to bend
Therefore they are most suited to underground cabling or fixed to outdoor walls using cable cleats.
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