Cast Iron Cut Out

[securespark]

With "Siemens" and "30A" on the front, feeding rubber-insulated, fabric-covered tails of about 0.007in².

That's YEDL for you!

 

[RF Lighting]

Certainly is. (Well CE Electric UK these days)

Not many like that round your way then?

 

[kai]

Is that lever at the top of the unit an isolation switch?

 

[RF Lighting]

Yup

 

[securespark]

There are a few, but not many.

I cover Macclesfield & High Peak, Staffordshire, Cheshire & South & West Yorks.

Staffs has the highest incidence of CI cutouts, mostly on TT supplies...

This next one is as I found it...

 

[bigzed]

This one is in my house in Hull - also YEDL :-

Securespark, are all Cast Iron Cutouts on TT supplies ? I guessed by looking at the earthing arrangement on mine, it was a TN-C. ? I can't see an earth rod anywhere on my property & all the Bonding Earths go straight back to the Consumer Unit Earth Bar.

YEDL have this on their job list for changing out FOC, although I ain't gonna hold my breath coz of all the flood work they have had to do just lately. Apparently the backlog is horrendous.

 

[pop123]

This one is in my house in Hull - also YEDL :-

Securespark, are all Cast Iron Cutouts on TT supplies ? I guessed by looking at the earthing arrangement on mine, it was a TN-C. ? I can't see an earth rod anywhere on my property & all the Bonding Earths go straight back to the Consumer Unit Earth Bar.

YEDL have this on their job list for changing out FOC, although I ain't gonna hold my breath coz of all the flood work they have had to do just lately. Apparently the backlog is horrendous.

TNS or TNCS ?

 

[bigzed]

TNS or TNCS ?

Hmmm, just looked at the plans for the tnc, tns & tncs arrangements. I suppose without being able to see into the Cut-Out itself, it's pretty hard to tell ? Do the Electricity Companies do the Neutral~Earth connections within the Cut-Out usually ?

 

[securespark]

No. Not all CI cutouts are on TT by any means, but what I was saying was the vast majority of SUBTERRANEAN TT supplies in Staffs I find are Cast Iron.

Yours looks like TN-S which is the earth connection coming off the sheath (or the CI casing in your case).

TN-C-S is usually done within the cut-out, but then some TN-S supplies are done that way too. The only way to tell them apart is the thickness of the cable.

TN-S with earth connected within cutout - modern pvc cable:

TN-C-S:

You can see the TN-S here is fed with split-con cable - 3 conductors, whereas the TN-C-S supply cable is straight concentric - effectively phase & a combined PEN conductor.

 

[RF Lighting]

Those pictures look familiar


Here is another slightly different naked TN-S for you

Virtually all the CI cutouts in my area are ISCO, with the odd seimens and lucy oxford dotted about.

Like this (But not normally with a BS951 clamp on them)

 

[Lectrician]

And a TN-S in my house

Yes, yes - I still have not got around to changing the CU and tails.......but have to move the CU for building works soon anyway!

 

[Taylortwocities]

Maybe we should have a spot the DNO seal competition.

 

[Lectrician]

Maybe we should have a spot the DNO seal competition.

You cant see mine - they are on the floor below the cutout

 

[RF Lighting]

 

[securespark]

Those pictures look familiar

Yes indeed! Eternal thanks for those. You won't believe how many times I have presented those as part of my powerpoint presentation to various electricians within our group.

And the first time I did the presentation, my area manager was there...

"I sincerely hope you did not open those cut-outs!"