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S.W.A. Armour Earthing.

Which regulations(s) require the steel wire armouring of a S.W.A. cable to be earthed if it is NOT used as a circuit protective conductor?


Case 1. Cable buried underground.


Case 2. Cable NOT buried underground.


Z.
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  • lyledunn:

    Maybe that’s the point Z is making, is the wire armour an exposed conductive part. Maybe not according to the definition.


    I have an old copy of Guidance Note 8 2004. It says that even when the armouring is not in service as a protective conductor it still has to be earthed as it is an exposed-conductive-part.


    But is it?



    Case 2. 

    If the glands are shrouded the brass glands can't be touched. The armour can't be touched as it is covered in insulation. And if glanded into an insulating plastic enclosure all is safe init? Is the armour really

    an exposed-conductive-part?


    Z.


Reply
  • lyledunn:

    Maybe that’s the point Z is making, is the wire armour an exposed conductive part. Maybe not according to the definition.


    I have an old copy of Guidance Note 8 2004. It says that even when the armouring is not in service as a protective conductor it still has to be earthed as it is an exposed-conductive-part.


    But is it?



    Case 2. 

    If the glands are shrouded the brass glands can't be touched. The armour can't be touched as it is covered in insulation. And if glanded into an insulating plastic enclosure all is safe init? Is the armour really

    an exposed-conductive-part?


    Z.


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