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Size of DNO main

Kelly Marie Angel

If you have a 3 phase main cable protected by 400 amp fuses what size is the cross section area of each core? Also what would be the size of a single phase take off  from this if its protected by a 100 amp fuse at the load end? As you mite of guessed I'm talking DNO cables 

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    Thanks Broadgage ì asked partly cos when I had to have a smart meter recently they upgraded the tails from 16 to 25 mm  which got me thinking what size is the DNOs main now I know  also someone reckons there main is only 4mm that seems  somewhat unlikely 

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    Thanks Broadgage ì asked partly cos when I had to have a smart meter recently they upgraded the tails from 16 to 25 mm  which got me thinking what size is the DNOs main now I know  also someone reckons there main is only 4mm that seems  somewhat unlikely 

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