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TNCS 6mm main earth - EICR

Stewart Mason
Just wondering what peoples first thoughts are on a 6mm main earth. 0.27ze, TNCS. 80A 1361 main fuse.


Iv'e tried doing a search on here but it did not come up with any results. (Maybe user error!). I'm sure this subject would have come up before.


Thanks
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    Thanks for the replies. I need to brush up on my adiabatic equations. Every now and again the need comes to do a calculation. I don't do them often enough to remember of the top of my head. 


    Just out of interest in what edition of BS7671 was a 6mm main earth the thing to do? I guess the property was built in the early 70's.
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    Thanks for the replies. I need to brush up on my adiabatic equations. Every now and again the need comes to do a calculation. I don't do them often enough to remember of the top of my head. 


    Just out of interest in what edition of BS7671 was a 6mm main earth the thing to do? I guess the property was built in the early 70's.
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