Main tails

[aaelectric]

What would you code advise for 100 amp fuse with 16,m tails

 

[aaelectric]

16mm tails

 

[GLENNSPARK]

give it a (2).....whats the earthing and bonding like here?

 

[Deleted member 26818]

What's the load?

 

[aaelectric]

say for instance a tns 10way fuseboard 60max load

 

[aaelectric]

would it make a difference if it was a tncs?
what about tails from main fuse to meter, if they were 16mm

 

[malcolmsanford]

a 16mm free to air sheathed cable can take 94amps, so that 100amp fuse though slightly over is I would imagine quite capable of taking the load.

But technically there is a chance that the cable can be put over it's Iz rating and so as a bum covering exercise I would code it a 2.

I assume it is an actual 100amp fuse in place, and not say a 60amp in an 100amp carrier, and these are the tails from the meter to the CU.

 

[edexlab]

Following on from Malcom ,I've had the DNO out a few times to confirm the type /rating of fuses and on a few occasions to isolate supply and on most 100A labelled cutouts its turned out to be an 80A ,so you could request they check this(they are obliged to provide you with this information) ,which could mean the 16mm tails are ok