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 13 replies
  • Subscribers 34 subscribers
  • Views 1427 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Earthing arrangement

05ballard

I have visited a site to Inspect someone else’s ecir and one of the defects is that there is no earth supplied. 
 

The site has about 200 ish sheds that are currently fed off 25mm swa radials then reduced to 6mm swa to each shed but there is no earth through any of the swa now the other elec has gone and said that due to this all would need to pulled up and pulled up. The cable it’s supplied in you can’t earyj the sheath due to only having one copper Center and the sheath as the neutral. Each shed does have a earth stake but all are in bad condition or missing completely. Each shed is privately owned so my argument is that the site is suppling them with a live and neutral and it’s down to the shed owner to supply a earth and 100ma rcd protection am I correct? 

Parents
  • 0

    But as a sites point of view do they have to supply a earth through the swa or can it be upto the owners of the sheds to install a earth rod. 

    The presence of central metering means this is ‘consumer side’ wiring so no PENs please, ESCQR and all that.

    The site could supply each shed with a bare live and neutral and no earth, on the clear understanding that the end users organised their own earths and RCDs. 

    However, this would either have to be done in overhead singles so the route is visible, or in a buried cable with an earthed armour, or buried under or inside a suitably strong  cover or  enclosure  providing sufficient  mechanical protection to prevent accidental damage, as the cable is not armoured

    This cable is NOT an SWA. For very good magnetic reasons, single core steel armoured cable is simply not made. It will be a plain concentric cable with either a copper or aluminium outer armour layer, and intended for pre-meter distribution. 

    Such an installation is not compliant with current regulations, and as that part of the rules has not changed for more than half a century, I also imagine it was not compliant when it was installed either.

    Mike.

     

Reply
  • 0

    But as a sites point of view do they have to supply a earth through the swa or can it be upto the owners of the sheds to install a earth rod. 

    The presence of central metering means this is ‘consumer side’ wiring so no PENs please, ESCQR and all that.

    The site could supply each shed with a bare live and neutral and no earth, on the clear understanding that the end users organised their own earths and RCDs. 

    However, this would either have to be done in overhead singles so the route is visible, or in a buried cable with an earthed armour, or buried under or inside a suitably strong  cover or  enclosure  providing sufficient  mechanical protection to prevent accidental damage, as the cable is not armoured

    This cable is NOT an SWA. For very good magnetic reasons, single core steel armoured cable is simply not made. It will be a plain concentric cable with either a copper or aluminium outer armour layer, and intended for pre-meter distribution. 

    Such an installation is not compliant with current regulations, and as that part of the rules has not changed for more than half a century, I also imagine it was not compliant when it was installed either.

    Mike.

     

Children
No Data

Community Rules & Guidelines