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EDWARD BRETHERTON: THIS LITTLE GEM IS THE CPC SLEEVING – RED, BLACK OR GREEN AND YELLOW – ALL CHOPPED OUT AND MADE GOOD NOW!
This type of installation work is down to a lack of understanding where the installer may not normally work with pvc/pvc cable and the need for green and yellow oversleeving for the bare copper circuit protective conductors. At least there was some knowledge, although misguided, for the need of the bare conductor to be provided with oversleeving.
The use of both red and black sleeving or, to correctly term it, stripped insulation, from the live conductors, creates even further confusion.
Within the electrical industry we are all aware that any protective conductor, with the exception of a functional earthing conductor, shall be a bi-colour combination of green-and-yellow.
Table 51 of BS 7671 provides the ‘Alphanumeric’ designation and the colour for identification of conductors which will remove any confusion with the function of all conductors within an electrical installation.
This lack of compliance with the requirements of BS 7671 can result in incorrect connections, unsafe installations and further investigation to determine and carry out rectification works to meet the correct identification of the conductors within the installation.
Therefore, the classification code would be a C2, Potentially dangerous – urgent remedial action required, for incorrect E identification of conductors at socket-outlets and other points within the installation.
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