Upgrading tails

[Macelec]

hi everyone,
I am sure this has been discussed many times but what do people think with regards to upgrading the fuse board tails on a consumer unit change? I have one to price up for a flat where the meter cuboard is outside the building, and the tails are run through the hallway up a riser cuboard through the loft space and down in to the fuseboard.
Would you just change the board (after testing) or would you upgrade everything from the meter and put in a isolator etc? As definitely a long way away from each other.
Thanks interested to hear people thoughts

 

[Octopus]

Why do you think they should be upgraded?

Or check with your schemes technical team?

 

[telectrix]

depends on the total load demand and the size of the supplier's fuse.

 

[Macelec]

Why do you think they should be upgraded?

Personally no if they test out ok I think it's fine as not adding anything. But the guy I subby for always a says to upgrade the tails. So was interested in people's thoughts as this would be a big job to renew

 

[Octopus]

Personally no if they test out ok I think it's fine as not adding anything. But the guy I subby for always a says to upgrade the tails. So was interested in people's thoughts as this would be a big job to renew

For what reason? Make money? That's just plain stupid...

There are very few sites that actually need the tails upgraded IMHO.

 

[Octopus]

depends on the total load demand and the size of the supplier's fuse.

But this is a flat and I suspect there may be a switch fuse in place .......

 

[HandySparks]

What size are the existing tails and what is your estimate of maximum load on the supply?

 

[7029 dave]

I have been asked to upgrade tails from cut out to meter, by Electrical contractors, when the supply is 60amp cut out.? I just walk away. The older type you can't get 25mm in anyway.

 

[Andy78]

For what reason? Make money? That's just plain stupid...

There are very few sites that actually need the tails upgraded IMHO.

You'd be amazed at the number of electricians that state "Gotta be upgraded to 25mm tails since the 17th came out. It's the regs"

 

[Octopus]

You'd be amazed at the number of electricians that state "Gotta be upgraded to 25mm tails since the 17th came out. It's the regs"

I blame those pretty pictures in the OSG ......

 

[westward10]

What current size are they, does it have circuit protection from the meter cupboard sounds like a long run.

 

[Midwest]

In general terms, I always invariably upgrade to 25mm, usually because the old tails are never long enough for the new CU. However in this case I would agree with previous posts, only if the distribution circuit is per the current regs.

 

[Wilko]

If they are long and running in walls perhaps think about an SWA upgrade and sw fuse at meter?

 

[Jacek Buczak]

Hi Everybody always with upgrade DB I upgrade tails is well tails 25mm,earth 16mm.