100ma RCD TNS - Condition Report

[Luke1510]

Hi All,

I've recently done a condition report at a property that has a 100ma RCD as the main switch... Never seen this before.. Would this be recorded as a C3? as its not protected by 30ma RCD? or would it be classed as a C2? Its an old installations (Old Red & black cables)

Thanks in advance!

 

[westward10]

Why do you think it needs Coding.

 

[buzzlightyear]

100ma RCD - http://www.electriciansforums.co.uk/threads/100ma-rcd.18192/

 

[Luke1510]

As a tick box on the condition report is 'Provision of additional protection by RCD not exceeding 30mA'

Might be really thinking outside the box.. But worth knowing for the future...

Thanks for quick reply

 

[Ian1981]

Sure it's not TT?

 

[westward10]

You don't need to Code the 100ma rcd but the fact it does not have additional rcd protection.

 

[The Ghost]

Are you saying there is no main switch in the consumer unit? Do you know if it is the DNO's property or is it part of the installation?

 

[Risteard]

Are you saying there is no main switch in the consumer unit? Do you know if it is the DNO's property or is it part of the installation?

There is a main switch - there is nothing wrong with having an RCD as the main switch instead of a simple switch disconnector.

 

[kingeri]

Is it an S-Type?

 

[The Ghost]

Well @Risteard I don't quite know how you know there is a main switch as in, in the consumer unit and the RCD is separate or is it in the consumer unit. It is not clear to me from the OP's write up. That is why I was asking, i.e. is it a stand alone RCD with a main switch in the CU or...?

 

[westward10]

Does it matter.

 

[camerabloke]

What earthing arrangement is it

 

[kingeri]

What earthing arrangement is it

Going by the thread title, TN-S??

 

[camerabloke]

Lol I’ll start to wear my glasses before posting

 

[kingeri]

It's funny but I often miss things when they are in the title and not the main body of text!

 

[The Ghost]

Does it matter

Only insofar as I like to know what the OP means exactly. But not especially, just curious.

 

[Gakure]

Seen something like that this evening, 100mA S type is normally used on TT system as main switch.