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LV Generator Earthing

  • 30-11-2015 10:06am
    #1
    Woods143
    Registered Users, Registered Users 2 Posts: 1 ✭


    I have a query in relation to the earthing of an LV generator.

    We have a 4pole LV generator feeding an ATS board that feeds a 5pole compressor. The generator has a combined neutral and earth, a TN-C-S system. The compressor manufacturer has advised that a separate earth and neutral is required, a TN-S system.

    Is this a simple case of removing the neutralising link back at the generator? What would be the neutral and earth fault paths? Is the neutral taken care of in the generator windings and the earth taken to ground via an earth rod?

    Can the existing site earth nest be used?
    Tagged:


Comments

  • #2
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,641 Mod ✭✭✭✭2011


    Can't reply properly now but no, do not remove neutralizing point.
    Both systems are neutralized.


  • #3
    Risteard81
    Registered Users, Registered Users 2 Posts: 2,567 ✭✭✭Risteard81


    The generator supply is not TN-C-S - it is TN-S.

    You will not be bringing a PEN conductor from the generator but separate neutral and earth through an RCD. But for neutral to be neutral it must be earthed and therefore the link is essential, along with an electrode for an earth reference.


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