Pretty sure my cps assessor was wrong

[stevethesparks]

But surely all clipped direct cables eventually go in to an enclosure

My thoughts too, with that logic, clipped direct cannot exist.

 

[Ian1981]

Not between the head and meter they don't.

Think he means installing twin and earth buried in a wall then into the db would be considered reference method c clipped direct.
I think that's what he means anyway

 

[westward10]

No talking of tails, yes they can be clipped direct between head and meter but they are no longer clipped direct within the CU.

 

[Ian1981]

That would mean 16mm tails CCC would be 76amps reference method B and maybe couldn't be adequately protected by a DNO 80amp fuse , tho load profile maybe acceptable If clipped direct then 87 amps

 

[westward10]

Not actually looked the ratings up.

 

[Dave OCD]

But like any cable these are continuous ratings, I'd be amazed if domestic meter tails ever see 80amps.

 

[7029 dave]

The bloke does not know what he is talking about. Lots of sparkys will use 25mm no matter what size the supply cut out is, I will not even up grade tails with a 80 amp cut out. ( you lot may have to depending on installation method)

 

[AndyL]

He actually said it had to be 25mm because the cuu main switch is rated at 100A.

 

[Ian1981]

He actually said it had to be 25mm because the cuu main switch is rated at 100A.

that makes no sense to me

 

[7029 dave]

He actually said it had to be 25mm because the cuu main switch is rated at 100A.

Well it will never reach that with a 60amp cut out. lol

 

[AndyL]

I know, makes no sense whatsoever

 

[Des 56]

He actually said it had to be 25mm because the cuu main switch is rated at 100A.

I wonder what cable size he would dismiss as not suitable for a outside light that has a 20 amp double pole switch for isolation

 

[DPG]

Like ^^^

 

[Wilko]

He actually said it had to be 25mm because the cuu main switch is rated at 100A.

Hi Andy, yes similar nonsense heard once re domestic board with multiple final circuit mcbs (all correctly selected and installed) adding up to over 100A installed capacity. Does my head no good at all.

 

[Midwest]

He actually said it had to be 25mm because the cuu main switch is rated at 100A.

I did a CU replacement a while back. On of the CU's was for the off peak heating & hot water, it had a 100amp main switch. The off peak meter (Ec 10) had two out puts, and the one for the hot water, would only accept a 10mm cable.

 

[Adie moore]

did you pass though? I'd guess he was just swinging his dick to let you know who's the boss. discretions the better part of valour and all that.

 

[Deleted member 26818]

Lol.
Insulated and sheathed tails are deemed as being double insulated.
T&E is not, because the Earth conductor is uninsulated.
ADS is the usual method of protection, as long as the installation is not TT and/or the length of the tails is less than 3m.
10mm2 conductors would generally be adequate for 60A.

 

[Simonslimline]

was the assessor aware that the "on site guide" is a guide and not the regs?

They need to try and justify there existence somehow I guess.