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 25 replies
  • Subscribers 32 subscribers
  • Views 3708 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

Bonding of temporary metal fences at a Railway station platform

tattyinengland
HI Chaps


One of the jobs I need to do in the near future is bond some temporary metal fences at a railway station platform.


I would not normally bond metal fences, but I know that this a requirement in this case; metal fences, metal stairways from the platform up to the overhead concourse etc


The overhead train HV lines are probably 5m away from these fences.


Do anyone have any further information for me so that I can understand why we are bonding these fences and what we are trying to achieve? 


I suppose its something to do with the HV side of things..................


Any help would be much appreciated


Kind Regards


Tatty
Parents
  • 0
    mmmmm..........may I please start with traction current - what is that? ?


    How does the current "return" - surely current in = current out and none of it should be going via an earth anywhere? Unless maybe its got to do with HV and induced currents of metalwork within a certain range of the HV lines?


    My ignorance remains vast; I'm no earthing expert and have never spent any time what so ever on the finer details of earthing and bonding beyond - what needs earthing and bonding in a house or small commercial building.

    In all big commercial buildings I just check that the main earthing and bonding is there but very often I don't have much of a clue what I'm looking at, let alone if its correct for the size of supply. I usually only need to worry about a floor on a multi-storey office block and not about the supply - that's always someone else's problem/responsibility. 


    Do the guidance notes on earthing and bonding cover this specific area?
Reply
  • 0
    mmmmm..........may I please start with traction current - what is that? ?


    How does the current "return" - surely current in = current out and none of it should be going via an earth anywhere? Unless maybe its got to do with HV and induced currents of metalwork within a certain range of the HV lines?


    My ignorance remains vast; I'm no earthing expert and have never spent any time what so ever on the finer details of earthing and bonding beyond - what needs earthing and bonding in a house or small commercial building.

    In all big commercial buildings I just check that the main earthing and bonding is there but very often I don't have much of a clue what I'm looking at, let alone if its correct for the size of supply. I usually only need to worry about a floor on a multi-storey office block and not about the supply - that's always someone else's problem/responsibility. 


    Do the guidance notes on earthing and bonding cover this specific area?
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