New build ring circuit regulations -help please

[Pete999]

In a new build , I have noticed how the Sparks that have wired the house (4 bed 3 storey town house)

They have put the kitchen appliances sockets/kitchen worktop sockets/boiler fcu/1st floor sockets/2nd floor sockets on a 32A ring and the ground floor sockets only 4 sockets on another 32A ring.

personally I would of kept the kitchen ring separate from any other sockets, even worktop/appliances separate
and each floor on its own ring in an ideal world, separate circuit boiler fcu etc etc

I know they do things on the cheap to get these houses up.

Does anyone knows the regulation on keeping the kitchen ring separate from other sockets due to
loading , is there one? or can they get away with wiring like this

i also noticed the Sparks have used a Megger electrical cert and client has no cert back from building control to certify the electrical works

Would Appendix H OSG, Regulation 433.1.204 553.1.7 be applicable?????

 

[Blademan_98]

Would Appendix H OSG, Regulation 433.1.204 553.1.7 be applicable?????

I just had to go and get my regs out to check

Indeed, they are pertinent to the discussion!

I really should have them to hand when on the forum lol

 

[davesparks]

Segregation may be the wrong word. The separation of circuits on a dual RCD CU in a domestic dwelling may be in section 5 of the BYB. I'll have a look tomorrow night. I'm off to bed.

Right, I see what you're getting at now.
Division of the installation into circuits and division of the circuits are the terms of memory serves

 

[Dave OCD]

I think at best it's lazy and at worst a very poor installation design. It's always good practice to put kitchens and or utility rooms on their own circuits for power IMO as that's where quite possibly 80% + of the socket loading will be, I'd also be interested in what the Zs tests out at on a ring winding its way around 3 floors and back. And these days a boiler circuit which is crucial for heating and hot water ought to be on a dedicated RCBO if you're doing the job right.

 

[joehat]

I just asking for opinions on how a new build has managed to have been signed off by the builders with pretty much 1 circuit for power for the whole house ,barring 4 sockets ground floor, is this common place for new builds these days, haven't got regs handy to look up

I have a small 2 bed house all sockets on 1 ring circuit .3 year old

 

[Octopus]

I have a small 2 bed house all sockets on 1 ring circuit .3 year old

Out of interest how many circuits do you have and what type of CU is it? dual RCD or RCBO?

 

[joehat]

Out of interest how many circuits do you have and what type of CU is it? dual RCD or RCBO?

Legrand

duel rcd

Rcd 1
Up lights 6a
Boiler 16a
Hob 32a
Shower 40a

Rcd2
Lights down
Oven 32a
Sockets 32a ring

 

[uksparks]

The thing I have noticed about new builds is that the wiring is all slapped in, all the accessories are on the wonk or bodged in, the CU's are never labelled properly if at all, oh and to top it off everuthing that's been fitted is crappy Deta.

i bet you any money nothing has been tested and the readings in the schedule that's usually hanging out the lid are just copied from another property of same or similar style.

 

[Leesparkykent]

The thing I have noticed about new builds is that the wiring is all slapped in, all the accessories are on the wonk or bodged in, the CU's are never labelled properly if at all, oh and to top it off everuthing that's been fitted is crappy Deta.

i bet you any money nothing has been tested and the readings in the schedule that's usually hanging out the lid are just copied from another property of same or similar style.

Depends on who is doing them really doesn't it...not all new builds are like that... well ones I do aren't :rolleyes2:

 

[uksparks]

No not all, it's too common a problem unfortunately.

 

[Davehaywire]

At last thanks guys for some decent answers , I don't post on hear often , only when I have a question to discuss.
im testing the property tomorrow so will find out more and will update

Also there are 5 houses similar next to each other , I will be knocking on the neighbours door and asking to briefly see there cert,just to see if,(someone mentioned in a previous post )that the Certs have just been copied and pasted.

i will be getting my regs,GN3 out and looking through them, I haven't been at work for the last week due to holiday that's why I haven't had them to hand,it's been quite an interesting experience listening to all the various answers

it seems to be difficult for everyone to understand what I was getting at but got there in the end

 

[Octopus]

Legrand

duel rcd

Rcd 1
Up lights 6a
Boiler 16a
Hob 32a
Shower 40a

Rcd2
Lights down
Oven 32a
Sockets 32a ring

So if you are cooking in the winter you loose everything in the kitchen except the hob! I would put lights down on RCD1

 

[Davehaywire]

So if you are cooking in the winter you loose everything in the kitchen except the hob! I would put lights down on RCD1

Yeah on dual rcd I'd always have down power with up lights on rcd1
and up power on down lights rcd 2

 

[davesparks]

The thing I have noticed about new builds is that the wiring is all slapped in, all the accessories are on the wonk or bodged in, the CU's are never labelled properly if at all, oh and to top it off everuthing that's been fitted is crappy Deta.

i bet you any money nothing has been tested and the readings in the schedule that's usually hanging out the lid are just copied from another property of same or similar style.

Dont forget we are all far more likely to be coming across the badly installed ones from major developers due to the higher than average chance of faults and the one size fits nobody designs that people will always want to make changes to. Plus if its a bad job they womt call the same electricians back.

We're far less likely to see Higher spec new builds and those designed and built for a specific customer as they will have less need and more than likely stick with using the same electricians.

 

[Davehaywire]

Out of interest how many circuits do you have and what type of CU is it? dual RCD or RCBO?

dual rcd
10 circuits
Oh and the cu is the old hager plastic cu with the grey/blue flapped lid with dimples, nice to see they are using there old stock up 2 weeks before the metal cu's have to be installed !!

we have been installing metal ones all year, otherwise as soon as jan comes the cu will not be to current standards and client will not be too happy there newly installed cu is not to current standards and before anyone says they don't have to install them till jan, yes correct,but it's good for the client if your thinking ahead don't you think!