SWA current capacity

[JohnW2]

I guess the intention is that a qualified person needs to select the correct mcb to match the cable size. ... Therefore parts can be replaced by diyers but not new circuits designed/created

Are you saying that you believe that changing an MCB (to one of different rating), alone, constitutes creation of a 'new circuit', and hence notifiable?

Kind Regards, John

 

[AndyPRK]

I didn't say that.

Nor is it a new circuit.

 

[JohnW2]

I didn't say that. Nor is it a new circuit.

I know you didn't - that's why I asked I'm really just exploring the totality of the situation. IF you don't believe that changing an MCB to one of different rating creates a 'new circuit', then one could do that without notification (certainly in England). If subsequently (days, weeks, months or whatever later) one replaced the cable, that wouldn't be creating a 'new circuit' either - so, again, not notifiable. So, if it's not a 'new circuit' when the two parts of the job are done days/weeks/months apart, logically nor would it be a 'new circuit' if the two jobs were done on the same day(s), would it?

Kind Regards, John

 

[flameport]

New circuit or not, the fact is that it won't be notified in 99% of cases.

 

[JohnW2]

New circuit or not, the fact is that it won't be notified in 99% of cases.

I don't know about the percentage but, in concept, you're probably right about DIY work.

But what about a self-certifying electrician? Do you think that (s)he would feel that replacing a circuit's cable and changing it's MCB to one of different rating did, or did not, require notification to his/her scheme (in England)?

Kind Regards, John

 

[ban-all-sheds]

Is it your view that changing an MCB constitutes installing a 'new circuit'?

Yes.

 

[JohnW2]

Is it your view that changing an MCB constitutes installing a 'new circuit'?

Yes.

Fair enough. I wonder what others think. As I said, I personally am not sure.

Kind Regards, John

 

[EFLImpudence]

I would say that replacing a faulty MCB with the same would definitely NOT constitute a new circuit merely a replacement.

Fitting a different MCB - rating or type - would, by definition, make a different circuit and therefore, new.

 

[JohnW2]

Fitting a different MCB - rating or type - would, by definition, make a different circuit and therefore, new.

Fair enough. Thanks.

Kind Regards, John