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Safe Disconnection to Undertake Work.

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Scene. An old farm building now used as a double glazing frame maker's workshop.


The supply comes from an old shed about 40 metres away, where the meter is. The old shed has some 70s/80s rusty M.E.M. isolators that feed several S.W.A. cables that exist the shed in many directions underground. I suspect that one feeds the main farmhouse, another a rented cottage and the others various farm buildings. There is no clear labelling of the isolators.


What is the best way to locate the frame maker's  building supply where I have to work?


Somewhere I have a circuit i/d set, if I can find it, but that will need access to the live parts and I do not wish to turn off the wrong isolator.


Z.


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  • 0
    kfh:

    Well done.


    All the farms around me I have been on are PME even when they are dairy with PME milking parlours. It makes any modifications difficult. Not so many still milking though.


    That is interesting kfh, What astounded me though was that the main three phase cut out has two S.P. Henley blocks placed side by side connected to Neutral, by the main fuses. They are linked together with a very short length of 16mm2, or imperial equivalent, cotton covered single cable. These two Henleys are used as earth terminals. How does that date things Watson?


    Z.


Reply
  • 0
    kfh:

    Well done.


    All the farms around me I have been on are PME even when they are dairy with PME milking parlours. It makes any modifications difficult. Not so many still milking though.


    That is interesting kfh, What astounded me though was that the main three phase cut out has two S.P. Henley blocks placed side by side connected to Neutral, by the main fuses. They are linked together with a very short length of 16mm2, or imperial equivalent, cotton covered single cable. These two Henleys are used as earth terminals. How does that date things Watson?


    Z.


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