It can be excluded, but would depend on the situation.
If the cooker circuit was installed prior to July 1st, 2008, then there was no requirement for it.
If after that date, then any cable buried less than 50mm in walls, that are not mechanically protected would require RCD protection, as would any newly installed socket. Cooker circuits are normally hardwired without a socket outlet but a cooker outlet, therefore it is the method that the cable is run, that would determine if RCD protection would be needed.
The 50mm rule, includes the reverse side of the wall. Taking note of that, there is also a building regulation that does not allow wall chases to exceed a 1/3rd of depth vertically and 1/6th horizontally of a single leaf/skin of the wall. So that does not include double skin or cavity walls. This is a structural regulation (Part A of Building regs)
Yes, we know he did.It can be excluded, but would depend on the situation.
If the cooker circuit was installed prior to July 1st, 2008, then there was no requirement for it.
If after that date, then any cable buried less than 50mm in walls, that are not mechanically protected would require RCD protection, as would any newly installed socket. Cooker circuits are normally hardwired without a socket outlet but a cooker outlet, therefore it is the method that the cable is run, that would determine if RCD protection would be needed.
The 50mm rule, includes the reverse side of the wall. Taking note of that, there is also a building regulation that does not allow wall chases to exceed a 1/3rd of depth vertically and 1/6th horizontally of a single leaf/skin of the wall. So that does not include double skin or cavity walls. This is a structural regulation (Part A of Building regs)
Nois it necessary to have an rcd supply for a cooker circuit
But the answer is not a simple one, as it could quite easily be necessary to require one.No
It may be needed for other reasons, new circuits not surface and not wired with one of the permitted cables, for example, but keeping the answer to question asked answer is no.
Not necessarily.is it necessary
But where in the question was twin and earth refereed to? If one uses Ali-Tube which could be plastered over in the same way as twin and earth then RCD not required.For example:
I am having a cooker circuit installed, the cable is to be chased into the wall at a depth of about 15mm, to allow the twin and earth cable to be plastered over
But where in the question was twin and earth refereed to? If one uses Ali-Tube which could be plastered over in the same way as twin and earth then RCD not required.
Circuits cannot be competently designed by means of asking vague and incompletely specified questions on DIY advice sites.
No, the question was simplistic, and the correct answer is not "No". Examples of correct answers are "possibly", "not necessarily" and "it depends".The question was simple, and the answer is simple it is "No".
But where in the question was twin and earth refereed to? If one uses Ali-Tube which could be plastered over in the same way as twin and earth then RCD not required.
The question was simple, and the answer is simple it is "No".
There may be methods of install which would need a RCD, but that was not the question, there is one way where a RCD may be required, that is if the manufacturer stipulates it's use, even then with amendment 3 the blind following of manufacturers instructions has been removed.
As has already been posted, if the cooker circuit was altered/extend/relocated and the new cable was buried in the wall less than 50mm, without mechanical protection. Then RCD protection is required. The same applies if any socket outlets were newly installed.Thank you for your replies regarding RCD protection for cooker supply. The reason I asked was that after having work done in the kitchen, the electricians seemed to think that it WAS necessary. So in the absence of a spare RCD way in the existing CU
Again this has been already been touched on, if the busbar has been altered, it could be that the RCD fitted was not manufactured and type tested for the CU and could be consider a risk at worse and bad practise at best. But I would code this on an inspection.they proceeded to provide one by hacking the live copper bus bar away and fitting an RCD in the gap provided.
Well it is only a recommendation and as the wiring regulation now ask for non-combustible units/enclosures to be installed. Then that would be a common recommendation/observation.They then had the nerve to write in the certificate RECOMMEND REPLACING CONSUMER UNIT.
Part P qualified ?
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