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E.L.V. Garden Bollards.

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A customer has some underground S.W.A. cable supplying three low level garden lights. The installation is amateurish and now keeps tripping off an R.C.D. He does not want the garden dug up to replace the cable with bad underground joints at the lights. I was wondering if E.L.V. lights could be used at say 12 or 24 Volts via an isolating transformer. Does anyone know of a suitable type of light please? That way the S.W.A could be reused.


Z.
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  • 0
    AJJewsbury:
    It is in my view acceptable to install "hi-tuff" or similar at a very shallow depth if it is only for ELV.

    522.8.10 would seem to suggest otherwise. It's a bit daft as bell wire inside some flimsy flexible plastic conduit would seem to comply but inherently robust composite cables not. Not clear what protection an earthed metal sheath is meant to provide for an ELV circuit, especially a SELV one, or how to judge 'equivalent protection against mechanical damage' (as distinct from protection from electric shock resulting from mechanical damage).


    In any event you've still got the requirements for covers/marking tape and sufficient depth (many lawns get aerated with a garden fork...)


       - Andy.

     


    522.8.10 is obviously aimed at L.V. not E.L.V. The use of the expression "suitable for use as a protective conductor" is a give away..


    Z.


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  • 0
    AJJewsbury:
    It is in my view acceptable to install "hi-tuff" or similar at a very shallow depth if it is only for ELV.

    522.8.10 would seem to suggest otherwise. It's a bit daft as bell wire inside some flimsy flexible plastic conduit would seem to comply but inherently robust composite cables not. Not clear what protection an earthed metal sheath is meant to provide for an ELV circuit, especially a SELV one, or how to judge 'equivalent protection against mechanical damage' (as distinct from protection from electric shock resulting from mechanical damage).


    In any event you've still got the requirements for covers/marking tape and sufficient depth (many lawns get aerated with a garden fork...)


       - Andy.

     


    522.8.10 is obviously aimed at L.V. not E.L.V. The use of the expression "suitable for use as a protective conductor" is a give away..


    Z.


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