Hi I have a domestic installation to rewire and the main incoming fuse is 80 amp so i am using 16mm double insulated tails, is the main earth size with this 16mm or 10mm ? Thanks
If you are referring to the typical UK insulated and sheathed singles used as meter tails these don't include a protective conductor in the cable. The norm would be to run a 16mm^2 Earthing conductor alongside.Hi I have a domestic installation to rewire and the main incoming fuse is 80 amp so i am using 16mm double insulated tails, is the main earth size with this 16mm or 10mm ? Thanks
ye if it was a 100 amp main fuse i would install 25mm double insulated tails with a 16mm earth, so if it is an 80 amp fuse then i know i can use 16mm double insulated tails but is a 10mm earth sufficient or does it have to be a 16mm?If you are referring to the typical UK insulated and sheathed singles used as meter tails these don't include a protective conductor in the cable. The norm would be to run a 16mm^2 Earthing conductor alongside.
If selected (as opposed to calculated) then 16mm^2 is required. As I stated, 16mm^2 is the norm.ye if it was a 100 amp main fuse i would install 25mm double insulated tails with a 16mm earth, so if it is an 80 amp fuse then i know i can use 16mm double insulated tails but is a 10mm earth sufficient or does it have to be a 16mm?
so cpc being minimum of half the live conductor size does not apply here then?If selected (as opposed to calculated) then 16mm^2 is required. As I stated, 16mm^2 is the norm.
so cpc being minimum of half the live conductor size does not apply here then?
ye if it was a 100 amp main fuse i would install 25mm double insulated tails with a 16mm earth, so if it is an 80 amp fuse then i know i can use 16mm double insulated tails but is a 10mm earth sufficient or does it have to be a 16mm?