Cable Marking With Cable Labels, Marks Or Codes
  • petechkaardashovpetechkaardashov July 2018
    Any electrician will show you that the vital part of cable management is identification. Cable marking has to be clear and legible, and colour coding is easily the most easily identifiable method.

    Cable marking is really a regulatory requirement, mostly using colour coding to point out individual functions.

    However, quality standard BS 7671 also insists that, where reasonably possible, wiring ought to be "arranged or marked in order that it can be identified for inspection, testing, repair or improvements on cellular phone."

    The vast majority of important when it comes to complicated installations where conductors can't be identified by the arrangement of wiring.

    These include distribution boards, where the arrangement of terminals on the neutral and/or earth bar doesn't match the actual layout from the phase terminals - that could result in the dangerous disconnection with the wrong conductor.

    Therefore patch cord must be accustomed to ensure that the neutral conductors are typically distinguishable through the earth ones.


    Cable marking must be clear and legible, and colour coding is easily the most easily identifiable method.

    However, where further identification is essential an array of products is available, for instance:

    · Sleeves, meaning conductors can still be identified if they are disconnected from their terminals, for instance for testing, thereby ensuring safe reconnection.

    · Metal markers, plates or tags where a durable product is required.

    · Computer printable products, like labels, tapes, heat shrinkable sleeves and tie-on cable markers.

    These may be marked with essential information including: earth, neutral, phase colours; the sort of material; the service temperature range; and capacity hazards such fire, petrol and oil.

    Where cables are buried, they could be identified by marks on aluminium or fibreglass posts, or on surface-mounted concrete markers carrying a durable metal cap which data is inscribed, with arrows indicating the cable location.

    Labels ought to be placed within two feet from the buried cable, in the beginning and end with the cable runs, at regular intervals and changes of direction.

    You can find exceptions where cable marking is not required, for example where a metal sheath or armour is employed being a protective conductor, or on bare conductors where permanent marking just isn't practical.

    However, whether or not it's below or above ground, for domestic or public installations, cable marking is vital to health & safety.

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