No MET at TN-S supply?

[dannyG85]

Been asked to carry out a fuseboard change and various other remedial works in a house that is to be rented out.
Everything seems pretty straight forward however there is not a main earth terminal to speak of, just 3 earth cables conected to the SWA - see pic. Is this a common occurrence in older properties? The earth cables are for 2 small fuseboard supplies and one for the gas bonding. Just wondering what people's opinions are on this and how to rectify? Would it be the suppliers job to fit an earth terminal or could I just fit a new cable to the SWA to supply an earth block. I have my doubts over the latter. Any info greatly appreciated.

View attachment 35818

View attachment 35819

 

[Pete999]

Slap an Earth bar on the board bingo MET

 

[Dave OCD]

That isn't a SWA it's an old lead sheathed cable !! You shouldn't touch it as the earth strap isn't the right way of connecting but contact the DNO who will hopefully fit the correct clamp, may help if you fit a SP block and short length of 16mm earth ready for them.

 

[dannyG85]

That isn't a SWA it's an old lead sheathed cable !! You shouldn't touch it as the earth strap isn't the right way of connecting but contact the DNO who will hopefully fit the correct clamp, may help if you fit a SP block and short length of 16mm earth ready for them.

Thanks, I realise it's not actually an SWA, just easier to explain! Appreciate the advice.

 

[Deleted member 26818]

That clamp, is the MET.

 

[The Ghost]

Looks like you may be able to upgrade to PME if the customer will stand the cost. Probably the best way forward imo.

 

[telectrix]

Looks like you may be able to upgrade to PME if the customer will stand the cost. Probably the best way forward imo.

not if TN-S gives a nice low Ze. i had one last week was 0.12 . had a proper connection (soldered) to the lead though. i'd replace that 951 clamp with the correct type and fit a MET.

 

[The Ghost]

Yeh true and all, its just that it is right there with that new cutout. 0.12 is good though for that kind of "earth" By the way @dannyG85 I never touch the supply cable at that point it is well known(?) they do like to short out and explode that is defo for the DNO every time.

 

[PEG]

I bet Tel has a bag of CP earth clips,in his carpet bag...

 

[Dave OCD]

Along with assorted buckle clips and old round Crabtree light switches with wooden pattresses.

 

[telectrix]

I bet Tel has a bag of CP earth clips,in his carpet bag...

nowt so expensive. a bit of stripped out 10mm 7 strand wrapped round the lead and a blowlamp and LMP solder., far cheaper.

 

[The Ghost]

blowlamp and LMP solder

Oh crap I melted the lead!

 

[PEG]

Oh crap I melted the lead!

...Then it's welding,or more correctly,"lead burning",and not soldering

 

[DPG]

That clamp, is the MET.

That clamp isn't a 'proper' MET.

 

[Des 56]

That clamp isn't a 'proper' MET.

That clamp needs to be thought of as a problem