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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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    Mike, the main fuse is an 80 Amp. B.S. 1361 cartridge fuse. I reckon that it will open in about 0.7 seconds for an earth fault of negligible impedance, with a fault current of about 850 Amps. Does that sound about right?


    Z.
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    Mike, the main fuse is an 80 Amp. B.S. 1361 cartridge fuse. I reckon that it will open in about 0.7 seconds for an earth fault of negligible impedance, with a fault current of about 850 Amps. Does that sound about right?


    Z.
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