tail to new c/u

[joebb]

Could some1 please tell me what size the tails have to be from the incoming supply to a new c/u, and what size the earth has to be for bonding, in a house.

 

[acat]

Tails are normally 25mm these days but it depends on the main fuse size which again these days is normally 100 amp. Bonding is 10mm minimum for 35mm and below 544.1 page 134 of the big red book refers





Chris

 

[joebb]

Cheers, s can i do all my cross bonding in 10mm or should i make that 6mm?

 

[ab1978]

25mm tails 16mm met and 10mm to gas and water. no need to supplementry bond with 17th edition c/u

 

[Amp David]

Only if all requirements are met though.