Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 48 replies
  • Subscribers 27 subscribers
  • Views 1740 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Safe Disconnection to Undertake Work.

Zoomup
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.


Parents
  • 0
    AdrianWint:

    My preferred solution would be to use a load of significant size, say 3kW or more & have a assistant turn this ON & OFF on command by using radios or mobile phones. It should then be easy enough to find this current at the supply end.


    I hear what you are saying about the cables being in trunking but it must be possible to remove the trunking lid?


    I can't see anyway of doing this without some (temporary) modification to the existing system


    You could always add a 13A socket short term


     


    Yep, I reckon that I will have to rig up something like that. All cables and tails are in old rusty metal trunking at the meter position. I believe that the shed roof for some years leaked but has recently been repaired. I don't fancy really disturbing things too much as I don't know just what may break or fail to switch on again. Even removing the metal trunking lid maybe a hazard.


    Cue lecture from sensible safety conscious forum members. (You shouldn't be adding to a circuit that may be unsound). Yes, but I have confirmed that the earthing is o.k. and the supply is suitable to add a new small three phase board  for a new machine.


    Tin hat on!


    Z.


     


Reply
  • 0
    AdrianWint:

    My preferred solution would be to use a load of significant size, say 3kW or more & have a assistant turn this ON & OFF on command by using radios or mobile phones. It should then be easy enough to find this current at the supply end.


    I hear what you are saying about the cables being in trunking but it must be possible to remove the trunking lid?


    I can't see anyway of doing this without some (temporary) modification to the existing system


    You could always add a 13A socket short term


     


    Yep, I reckon that I will have to rig up something like that. All cables and tails are in old rusty metal trunking at the meter position. I believe that the shed roof for some years leaked but has recently been repaired. I don't fancy really disturbing things too much as I don't know just what may break or fail to switch on again. Even removing the metal trunking lid maybe a hazard.


    Cue lecture from sensible safety conscious forum members. (You shouldn't be adding to a circuit that may be unsound). Yes, but I have confirmed that the earthing is o.k. and the supply is suitable to add a new small three phase board  for a new machine.


    Tin hat on!


    Z.


     


Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines