What is Type 14 BS 6708 Trailing Cable?
BS 6708 Type 14 Trailing Cable represents a specialized engineering solution within the British Standard family of mining cables, specifically designed for power distribution to excavating and crushing machines in underground coal mines and surface quarrying operations. This cable type features a unique configuration that balances electromagnetic protection with cost efficiency and simplified installation.
🔑 Critical Distinguishing Feature
Unlike Type 11 cables where all cores are screened, Type 14 features screened phase cores only, with the pilot core and earth core intentionally left unscreened. This design choice provides specific advantages in fault current handling and cable weight optimization while maintaining essential EMI protection for power conductors.
According to BS 6708:1998 classification, Type 14 belongs to the family of non-armoured cables with individually metallic screened cores rated at 640/1100 V, specifically designated for use with coalface cutters and similar mining machinery. The standard encompasses Types 7, 7M, 7S, 11, 14, and 16, each with distinct screening configurations optimized for specific operational requirements.