Forkinhades Posted March 27, 2011 Share Posted March 27, 2011 Seem to remember a while back, about a regulation in the UK that did not allow you to export an earth to outbuilding of more than 5 meters away. Cannot seem to find the thread,?? anyone? Link to comment Share on other sites More sharing options...
Crossy Posted March 27, 2011 Share Posted March 27, 2011 Hi Forky. There's no absolute regulation regarding exporting a ground (except in the case of boats and caravans), however there are rules regarding extraneous conductive parts which make it unwise to export a TNC-S (MEN) ground to an outbuilding, there are particular hazards associated with metal framed units (Portakabins). You may like to have a look in the IET Regulations forum here http://www.theiet.org/forums/forum/categories.cfm?catid=205 particularly this thread http://www.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=40496&enterthread=y and this thread http://www.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=39422 could be of interest Try an IET forum search on 'export'. NOTE We don't normally allow links to other forums, the IET (formerly the IEE) is a globally respected professional organisation, in this instance I'm bending the rules slightly, anyone has a problem please contact support[at]thaivisa.com Link to comment Share on other sites More sharing options...
Forkinhades Posted March 27, 2011 Author Share Posted March 27, 2011 Hi Forky. There's no absolute regulation regarding exporting a ground (except in the case of boats and caravans), however there are rules regarding extraneous conductive parts which make it unwise to export a TNC-S (MEN) ground to an outbuilding, there are particular hazards associated with metal framed units (Portakabins). You may like to have a look in the IET Regulations forum here http://www.theiet.or...s.cfm?catid=205 particularly this thread http://www.theiet.or...6&enterthread=y and this thread http://www.theiet.or...&threadid=39422 could be of interest Try an IET forum search on 'export'. NOTE We don't normally allow links to other forums, the IET (formerly the IEE) is a globally respected professional organisation, in this instance I'm bending the rules slightly, anyone has a problem please contact support[at]thaivisa.com Thanks crossy, better close the thread eh? Link to comment Share on other sites More sharing options...
electau Posted April 20, 2011 Share Posted April 20, 2011 Under AS3000 one can run an earthing conductor to a switchboard in an outbuilding, the MEN is at the main switchboard.( 1 earth electrode) Alternatively one can MEN each switch board. This is often used on farms etc where there are aerial submains to other buildings. (1 earth electrode for each switchboard). Link to comment Share on other sites More sharing options...
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