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  1. sheffieldelec

    Main equiptential conductor

    no but there is gas also from main building also in plastic
  2. sheffieldelec

    Main equiptential conductor

    it is a TNCs system and its bonded with a 10mm cable will IR next time i go back thanku!!
  3. sheffieldelec

    Main equiptential conductor

    Recently doing a periodic inspection, i came across a 10mm bonding conductor to a external building (valet bay) waterpipe. However the the main bonding conductor on the the water into the main bulding is 35mm (95mm Neutral), the water in the external building is fed by a plastic pipe underground...

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