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db/cu and 521.5.1 Ferromagnetic enclosures: electromagnetic effects

a good day wishes to all

 

‘they’ do not write these things for no reason; there is science present, so …

using this example: what's the non-compliance issue, if any in reality, with meter tails entering a db/cu through the same opening (fair enough), but a main earthing conductor being glanded/bolted to the housing inside (via a different aperture to the tails, to the earthbar attached to the case, along with bonding etc),  or even on the outside  ?   

 

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  • AJJewsbury: 
     

    My copy of the 16th Ed (red cover) 1991 mentions ‘and the appropriate protective conductor’ in 521-02-01 - so well before SPDs.

       - Andy.

    Ooooops, yes so it does. My mistake.

    Z.

Reply
  • AJJewsbury: 
     

    My copy of the 16th Ed (red cover) 1991 mentions ‘and the appropriate protective conductor’ in 521-02-01 - so well before SPDs.

       - Andy.

    Ooooops, yes so it does. My mistake.

    Z.

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