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tank/hv earth electrode and nearby concrete pad with mounted lighting column

psychicwarrior
Hello - good day to all !


Any experience/experiences that might provide a few tips/watch out fors etc, most gratefully received.


Contemplating the run of buried SWA cabled over 100m for outdoor lighting (and electric gates) passing by a pole mounted transformer, where it's been confirmed by the distributor that there is a Tank/HV earth electrode setup  at the pole. Whilst explaining this was not a rigid rule (more a guide and just as well as it shuts off the only feasible route), it was suggested best [in this case] to stay out of a 9m radius if burying cables - but the situation would be helped if this had to be compromised, by running the cabling in ducting/conduit when in the ground.


What are opinions on the siting of concrete pads with threaded rod to secure [conductive] column lighting in this context; this would seem a more serious concern within the 9m advice, is it a no-no, is there anything that can be done to mitigate (aside to using all non-conducting materials), or is it a non-issue (I feel not) ? 


I have no experience of such a long distance, but any tips and advice on pulling SWA along duct for over 100m would be uiseful too :-)   \\m/


Thank you all

Habs

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  • 0
    mapj1:

    Or  for light duty situations  the all-insulated lamp post  You could do worse than call them to see what they offer for your situation Tel +44 (0)1623 511 111  I have no connection with the company other than our maintenance folk ordered a replacement post for a funny situation from them once.


    Quote:

    ”GRP does not conduct electricity, it is an insulator. As our columns are constructed entirely from GRP, they are a class 2 product. Being Class 2, our columns require no electrical earthing connection, therefore affording savings on installation. There is no risk of electrocution from touching the column, making it an ideal solution for low / medium voltage areas.”


    so so how do you install a cable without armour buried in a duct?


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  • 0
    mapj1:

    Or  for light duty situations  the all-insulated lamp post  You could do worse than call them to see what they offer for your situation Tel +44 (0)1623 511 111  I have no connection with the company other than our maintenance folk ordered a replacement post for a funny situation from them once.


    Quote:

    ”GRP does not conduct electricity, it is an insulator. As our columns are constructed entirely from GRP, they are a class 2 product. Being Class 2, our columns require no electrical earthing connection, therefore affording savings on installation. There is no risk of electrocution from touching the column, making it an ideal solution for low / medium voltage areas.”


    so so how do you install a cable without armour buried in a duct?


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