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S.W.A. Armour Earthing.

Which regulations(s) require the steel wire armouring of a S.W.A. cable to be earthed if it is NOT used as a circuit protective conductor?


Case 1. Cable buried underground.


Case 2. Cable NOT buried underground.


Z.
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  • Chris Pearson:
    Zoomup:

    Indeed, I noted the "deficiency" and am not entirely happy with the situation. It was installed on the cheap by a sports' club member. I was keen to learn of regulations that apply if I have to defend my position of criticising the installation.


    Naturally, we know better, but I have to say that it is not obvious to a lay person that the armour should be earthed, or indeed how to do it. The word, "armoured" simply suggests a means of mechanical protection for the inner cable.




    Page 39 of latest (2018) GN3, item (o) of the "non-flexible cables" list refers the reader to Regulation 411.3.1.1



    (o) Metal sheaths and armour earthed (411.3.1.1)





     


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  • Chris Pearson:
    Zoomup:

    Indeed, I noted the "deficiency" and am not entirely happy with the situation. It was installed on the cheap by a sports' club member. I was keen to learn of regulations that apply if I have to defend my position of criticising the installation.


    Naturally, we know better, but I have to say that it is not obvious to a lay person that the armour should be earthed, or indeed how to do it. The word, "armoured" simply suggests a means of mechanical protection for the inner cable.




    Page 39 of latest (2018) GN3, item (o) of the "non-flexible cables" list refers the reader to Regulation 411.3.1.1



    (o) Metal sheaths and armour earthed (411.3.1.1)





     


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