TT system earth cable size.......

[magnoliafan89]

Hi guys

At a job doing a re wire and the electrician i was with is changing the earth cable over from 16mm to 6mm
He says as its a tt system that it only needs a 6mm.

Is this right?

 

[Andy78]

Very odd behaviour. A bit like ripping out a 6mm cooker cable and installing a 2.5mm because the current oven uses a 13A plug top.

 

[telectrix]

will a current oven cook the current buns as well on a 13A plug top?

 

[Andy78]

will a current oven cook the current buns as well on a 13A plug top?

Yes, it just takes longer.

 

[Marvo]

What’s the scrap value of the 16mm cable?

Tel will probably know off the top of his head.

 

[telectrix]

£2.50/kilo with insulation. £4/kileo bare copper..

 

[Octopus]

£2.50/kilo with insulation. £4/kileo bare copper..

how much for SWA not stripped?

 

[NDG Elecs]

Maybe he replaced it to prove a point to an apprentice. Actions speak louder than words and all that. Or maybe it's remote from the intake and 70 metres from the intake!

 

[telectrix]

how much for SWA not stripped?

not sure atm, but as it's mixed metals, guess about £1 /kilo.

 

[Rpa07]

not sure atm, but as it's mixed metals, guess about £1 /kilo.

Compo!

 

[Rpa07]

Seriously Tel, I’ve just looked at my avatar and I’m just coming up to 3000 posts. Now when I was at 2000 you were 46,379 ahead, I’m nearly at 3000 and you’re at 50,000 ahead.
Do I need to post more or think about it less?
Is there still a special room for the 3000 club?

 

[telectrix]

posts are like age... just a number.

 

[Deleted member 26818]

If you quote someone’s post does that get added to their post count?

 

[johnduffell]

Are you sure he's the electrician or is he just someone walked in and nicking the biggest cable he can find? Is the replacement just some coloured string

 

[johnduffell]

and then along comes DNO and converts to PME.

They could convert tns to pme but they'd be unlikely to go removing an earth rod connection and connecting to their cutout especially if undersized.
They may decide to provide a pme earth but nothing would be connected to it.