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No Rcd Protection On A Tt Installation


paulcopeman

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paulcopeman

How long has it been the normal practise to have RCD protection as standard on all ccts on a txt system because I did a domestic eicr and I was surprised to find the lighting ccts had no.rcd protection. Needless to say a code 1 was the order of the day.

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Andy™

slow down...

 

first of all lack of RCD is NOT code 1 (do you really think there is an immediate danger of someone getting a shock because there is no RCD?). secondly, RCD requirement for lighting is not really that old (17th)...

 

of course, if you were competent, you would already have known all that

 

You should go back to your victim and refund them the EICR and tell them to get someone else

 

and what is a txt system? didnt think my phone txt messages had an option for RCD?

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Sidewinder

Never a code 1.

Not even required to have an RCD on a TT under certain circumstances even today by careful design and competent installation an RCD can be omitted from a TT.

However, that does take some doing, I'm not saying otherwise.

It can however, be done.

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paulcopeman

The ze is over 300 ohms so no chance of hitting required times for mcbs. Under what circumstances can RCD be omitted on a txt system

I always thought it was always required.

I work in lo.don therefore not worked on tt systems before.

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Sidewinder

Look in BS7671 & associated guidance, it's all there, but, a 300 Ohm Ra is not going to cut it, neither is a 200, neither is a 100, neither is a single rod...

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paulcopeman

Please don't reply to this post anymore Andy if you have nothing helpful to say.

TO system I meant.

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Andy™

id say telling you that no RCD is not a code 1 is helpful... now you know something you didnt before you posted...

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paulcopeman

Thanks for that then.

Not a code 1 I admit.

Havn't sent report yet so I'll change that.

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steptoe

What is the earthing arrangement.? 

I'm confused 

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sparkyboy1

This is a TT system. Overhead cables and earth rod.

Main switch 60947-3.

First three ccts are lighting. No RCD protection.

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Is sparkyboy1 and paulcopeman the same person with two accounts or are they helping each other on this job? 

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paulcopeman

I am working on my own.

Most days anyway.

Who is sparkyboy1.

Confused.

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ProDave

I am working on my own. Most days anyway. Who is sparkyboy1. Confused.

Post #10. He seemed to answer your question as if he knew the install..........

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Murdoch

What was the requirement for doing the EICR?

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Andy™

Post #10. He seemed to answer your question as if he knew the install..........

 

:slap

 

someone forgot which account they were logged in from...

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kerching

:slap

 

someone forgot which account they were logged in from...

I have the same problem...

Never sure whether to use kerching or R?

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Murdoch

Its a shame when people ask questions, review input and don't have the decency to respond to questions or points raised.......

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Blue Duck

I wonder of the tails have an RCD too?

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