TNS or TNCS

[polo1]

You decide!

 

[aptsys]

I wouldn't be surprised if it was TN-S. Looks like PILC, so there's a high probability that it is TN-S. You'll only be able to tell by testing, or by inspection.

This is an identical cut-out with the covers removed.

 

[malcolmsanford]

I wouldn't be surprised if it was TN-S. Looks like PILC, so there's a high probability that it is TN-S. You'll only be able to tell by testing, or by inspection.

This is an identical cut-out with the covers removed.

View attachment 5536

Agree that yours is a TN-S as that Brown? coming out of the cable going into the connector block, if I saw that then I would inclined to think it was TN-S.

The original OP picture just shows the cable going to the head, there don't appear to be an earth off the lead sheath, and so I would expect a TNC-S and would confirm either way by test.

I think your picture proves that it is definately not a TNC-S as it as 3 conductors from the cable into the head, where the OP one can only really be checked by opening the side cover or testing.

Just out of curiosity what type of cable is feeding that head.

 

[aptsys]

Just out of curiosity what type of cable is feeding that head.

Splitcon

The earth in the cable is bare.

With the covers on, most would assume it was TN-C-S:

 

[malcolmsanford]

Yes can see what you mean with the covers on can't argue with that.

Which is why I asked what cable it was. I think the old lead sheath as the original OP one was without some type of external clamp on the sheath to indicate a TN-S you would rightly think TNC-S and as we all stated test to prove or remove cover.

Split con I would not assume becasue as you have shown in both pictures it can be either.