Grounding conductor size

Hi there.
Is there an international standard that specifies the size of the grounding conductor to bond a metallic part of the installation to a grounding bar?. And to connect the grounding bar to the grounding rod?. Thanks.
Miguel

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anees mustafa

Nov 24th, 2012

If your cable is 300mm, grounding conductor size is one core of cable, which cable is used to connected the equipment.