15kV is a voltage commonly specified for equipment cables, including robust Mining equipment cables, manufactured in accordance with IEC 60502-2, but is also associated with British standard armoured cables. Whilst mining cables may be sheathed in a robust Rubber to provide abrasion resistance, especially for trailing applications, the BS6622 and BS7835 standard cables are instead sheathed in PVC or LSZH materials, with mechanical protection provided from a layer of steel wire armouring. Cables named using Portuguese references are also available both armoured (STA/ATA and AWA/SWA) and unarmoured variants, with PVC or PE sheathing.