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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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  • I don't think that there is a non-compliance.

    521.5.1: Where such conductors enter a ferrous enclosure …

    If the earthing conductor is bolted to a terminal which has been provided for that purpose on the outside of the enclosure, the cable does not enter the enclosure.

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  • I don't think that there is a non-compliance.

    521.5.1: Where such conductors enter a ferrous enclosure …

    If the earthing conductor is bolted to a terminal which has been provided for that purpose on the outside of the enclosure, the cable does not enter the enclosure.

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