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Earthing Schematic Query

me1899
Hi all, hope you are well.


Just a quick question on the attached snippet from a drawing - basically for an energy centre and on their earthing schematic all earth bars are shown as follows:

2d8a9081c4e99b3842ad8d5034691cf8-huge-image.png

186e551d172cd9b4b75db7f34dac3af9-huge-image.png


The big text above is the drawing revision text saying the change was deliberate.


I would have thought the above is not right - the main conductor should be connected to the other side of the disconnecting link.


What they have done on site is install a different earth bar as follows:

3c6872262d573da80ef744d085327faf-huge-image.png


Disconnecting link is wrong way round?


I am not sure of the rationale behind this?


Any ideas?
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  • 0
    Looks like the earth bar has been shortened or is the wrong type.


    Usualy the means of earthing ( the earthing conductor) is connected before the earth link say stud 1. The removable link is on studs 2 and 3. Every other bonding conductor or CPC is connected to studs 4 to N. That way all conductors stay permanently connected when the test link is removed to carry out a Ze test.


    New earth bar required?
Reply
  • 0
    Looks like the earth bar has been shortened or is the wrong type.


    Usualy the means of earthing ( the earthing conductor) is connected before the earth link say stud 1. The removable link is on studs 2 and 3. Every other bonding conductor or CPC is connected to studs 4 to N. That way all conductors stay permanently connected when the test link is removed to carry out a Ze test.


    New earth bar required?
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