Termination of Armoured Cable

As 17 th Edition IEE Regulations (BS 7671:2008)
Termination of Armoured Cable
Only incoming armoured cable termination
shown, for clarity. The outgoing cable, if
armoured, would be terminated as for the
incomer with, in effect, copper protective
conductors bridging, and connecting, the
enclosure.
Figure A : Termination of Amoured Cables
Termination glands for rubber-insulated and plastic-insulated cables must comply with BS 6121.
Where the armouring forms part or all of the CPC it is inadvisable to rely on detachable plates of
equipment as a permanent and reliable path for earth fault current. Detachable plates are often
covered with ‘non-conductive’ finishes and are usually secured by a few very small screws, which are
unlikely to sustain earth fault current adequately. In such circumstances, it should be considered
essential to make the protective conductor connection via a gland tag, nut, bolt and washers with a
crimped protective conductor connecting the tag to the earthing terminal in the equipment,
repeating the procedure for the outgoing cable (see Figure A).
“Hopefully it’s useful as a knowledge and guideline”
Prepaired by : Hafriq
Aug-2018