TNS or TNCS supply?

[swifters]

Hi all, please see attached? TNS or TNCS supply? Looks like it could be a TNCS but no notice to say that it is?

 

[Sparks1962]

I like the line tap used as a MET....not.

 

[trev]

I'm sorry but some of the criticsm is a little unjust. Yes, the di log is a very easy to use multi function tester but no where in the manual does it say to join the neutral and earth leads together to perform a seperate pfc to distinguish between tns and tncs. Additonally, the way the readings naturally fluctuate I would say it is not always easy to interpret these results.

I can distinctly remember having a high ze value of 0.9 ohms on one job. Uk power networks came out and there was some ambiguity as to whether it was tns or tncs. He removed the service head cover and showed me it was tns. He didn't isolate the supply before removing this cover. He then took his own ze readings and they were just under 0.8 ohms. When I said I was getting readings of 0.9 ohms earlier he just shruged his shoulders.

Sorry but I don't think the criticism is unjustified, You're supposed to know how to carry out the full series of tests. If that means that you have to learn how to take them then that's what you do. Suppose something had gone wrong with this install and you found yourself in front of a judge, do you think the excuse of "There's nothing in the manual that says you do this" will cut any ice?

The bit about seeing a DNO gadgie doing this is hardly justification for you doing what you did. The DNO guys are trained and know how to do it properly and safely. I once saw a guy wrestle an alligator but I wouldn't dream of trying it.

 

[trev]

At least now you know you did a very silly thing and it won't be repeated.

 

[GLENNSPARK]

and , of course, you've never pulled the bullit to determine it's type and rating, have you? :lipsrsealed2:

but this is about dismantling a service head Tel...:lipsrsealed2:

 

[ahtyrrell]

I would say almost certainly TNS look at the neutral cables there sheathed black meaning the cable is a split concentric hence a TNS

 

[Sharpend]

I once saw a guy wrestle an alligator but I wouldn't dream of trying it.

I really thought you were man enough for such a rumble in the jungle!

 

[trev]

I really thought you were man enough for such a rumble in the jungle!

There is a photo of me, Mrs Trev and girl child holding one in Gatorland. Does that count

 

[Sharpend]

Doesn't count if its out if the shop!

 

[trev]

No, it was a real live baby gator. About a metre long. Although it did have the pointy, dangerous bits taped up.

 

[guest119]

A metre long and dangerous, .............you mean like a short Electrical Trainee?

 

[GLENNSPARK]

A metre long and dangerous, .............you mean like a short Electrical Trainee?

well 5 X 7"=35"...metric conversion is 889mm....so its not too far of is it...

 

[Guitarist]

Electrical Trainee's are old news. 15 day courses are now available!!!

 

[GLENNSPARK]

Electrical Trainee's are old news. 15 day courses are now available!!!

yes G...their all the rage wouldn`t you know...

 

[Guitarist]

yes G...their all the rage wouldn`t you know...

Which is fair enough. It's unfair to expect people to take a full 5 weeks out of their jobs just to become fully qualified electricians...

 

[richy3333]

Hey swifters,
As you ignored my last post I would welcome your comments on this:

Dear

Misrepresentation by South-London-Electricians

Thank you for your enquiry, regarding the misrepresentation by South-London-Electricians.

I can confirm that South-London-Electricians are not registered as an Approved Contractor or a Domestic Installer with this organisation.

We will now be investigating the misuse of our details directly with the contractor internally. If we do not receive an adequate response from the contractor, this matter will be passed to the local Trading Standards and posted on the NICEIC ‘Wall of Shame’ on the below link. Please note; while our investigation is taking place , we will not be able to provide you with updates on this matter.

NICEC | Householder | Wall of Shame

The NICEIC takes the misrepresentation of its logos very seriously and would like to thank you for the information you have provided.

Yours sincerely



Trisha John | Customer Relations Executive | NICEIC (A trading division of Ascertiva Group)