TN-C-S? or TN-S? Can anyone help?

VoltzElectrical

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• Oct 10, 2012

• #2

TN-S I wait to be contradicted!

 

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tigerpaul

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• Oct 10, 2012

• #3

TN-s I'd say mate

 

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T

trev

• Oct 10, 2012

• #4

I'd agree with Voltz but maybe it's a DIY job because of the incorrect clamp. Have you measured PSCC and PEFC if they're the same you have a TN-C-S

 

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keniff

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• Oct 10, 2012

• #5

Looks like a tn-s with the block being contained in the head?

 

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K

Knobhead

• Oct 10, 2012

• #6

Lead supply pipe!

I hope you haven't put that clamp on it!

 

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sparks1973

• Oct 10, 2012

• #7

VoltzElectrical said:

TN-S I wait to be contradicted!

Click to expand...

i dont think so....
look at the colour of the cable coming from the TN-S connection..
old colours yes?..
its an old TN-S thats been PME`d....maybe the TN-S was high....

 

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S

sparks1973

• Oct 10, 2012

• #8

PFC should tell you anyway...

 

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Knobhead

• Oct 10, 2012

• #9

Can anyone get a close look at the conection on to the PILC? It looks plumbed on ? ? ?

 

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sparks1973

• Oct 10, 2012

• #10

been sweated on has that Tony...i`m sure of it...

 

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telectrix

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• Oct 10, 2012

• #11

disconnect from the clamp on the lead, then measure the Ze. if you get < 0.35 ohms, it's PME. a PEFC and PSCC measurement would confirm this.

 

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K

Knobhead

• Oct 10, 2012

• #12

I take my hat off to whoever did that.

 

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Wizbit

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• Oct 11, 2012

• #13

sparks1973 said:

i dont think so....
look at the colour of the cable coming from the TN-S connection..
old colours yes?..
its an old TN-S thats been PME`d....maybe the TN-S was high....

Click to expand...

Many thanks for all comments...yep my first thought given the green cable to clamp was that it's an ex-TN-S that has been PME'd. I have a PIR that was done on it a couple of years ago which is riddled with mistakes, (I won't say which company he was registered with!) to the extent I don't think some measurements were even made. He put a Ze of 0.22 & and TN-C-S which makes sense. Guess it would be worth disconnecting the lead clamp and getting a Ze measurement to confirm?..

 

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i=p/u

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• Oct 11, 2012

• #14

and carring out pfc on both conductors

 

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Silly Sausage

• Oct 11, 2012

• #15

Wizbit said:

............... Guess it would be worth disconnecting the lead clamp and getting a Ze measurement to confirm?..

Click to expand...

And the one on the earth block.

 

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