New build ring circuit regulations -help please

[davesparks]

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

Even of you had a regs boom handy what would you look for?

 

[Davehaywire]

No only 2 rings for power
yes all fridge freezer tumble drier wash machine, boiler, worktop skts
kitchen 1st and 2nd on one 32a circuit

i need to know a regulation to state what I think before I say it if there is one, someone said segregation of circuits , would that apply to this

 

[Davehaywire]

Yes that's what I thought that they are working from a spec from the designer, I yes I understand the lower loading on the top 2 floors but surely just from inconvenience if there Is future fault on the circuit this is wrong

 

[newtothis]

There’s new town houses round my way, the ground floor is just a glorified large entrance hall split with a garage and a means to access the rear courtyard style garden. Is your ground floor more much more than that ?

Just thinking it through, I don’t know jack really, just interested

 

[davesparks]

i need to know a regulation to state what I think before I say it if there is one, someone said segregation of circuits , would that apply to this

The regulations don't work like that.

They require good design and the division of an installation to avoid danger etc arising from the failure of one circuit.

 

[davesparks]

Please Gents.


Reg will come under segregation of circuits btw.

When does segregation of circuits every come in to a domestic install? Apart from segregation of band 1 and band 2 voltages, but that's not relevant here.

 

[Paul.M]

When does segregation of circuits every come in to a domestic install? Apart from segregation of band 1 and band 2 voltages, but that's not relevant here.

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.

 

[Geordie Spark]

I have lots of segregation in my house.

1. living/dining room with 10x double sockets on a 32A RCBO

2, Annex (converted garage) with 8x double sockets on a 32A RCBO

3. Utilty room with 4x double sockets (powering fridge/frezer, washing machine & Gas tumble dryer) on a 32A RCBO

4. Kitchen with 6x double sockets (powering fridge, ignition for gas cooker & electric kettle, toaster etc) on a 32A RCBO

5. Bedrooms 1 & 2 with 4 double sockets in each on a 32A RCBO

6. Bedrooms 3 & 4 with 4 double sockets in each on a 32A RCBO

7. Lighting to living/dining room & kitchen 2x 5 lamp chandiliers, 2x 2 lamp wall lights 1x ceiling rose. all on a 6A RCBO

8. Lighting to Utility Room & Annex 3x ceiling roses all on a 6A RCBO

9. Bedrooms 1&2 + staircase lights on a 6A RCBO

10. Bedrooms 3&4 lights on a 6A RCBO

11. Central Heating on a 6A RCBO

12. Intruder alarm on a 6A RCBO

13 Smoke/Heat alarms on a 6A RCBO

14. Is earmarked for my garage at the far end of the garden once I decide what cable to use and how to run it and get my health back to a sufficient level to be able to do it. ... Just now there's no chucking fance.


The C.U. is a nice big Wylex and it - together with all the RCBOs - fell out of the back of a van otherwise there would have been no way on God's earth that I would have been so extravagant!

 

[Richard Burns]

I would describe the install as poorly thought out but not specifically breaking any regulations, though I believe it is recommended that boilers should be on their own separate circuit and supplies ought to be sub divided into sufficient circuits to minimise inconvenience.
Section 314 applies in this case but even though one can see the inconvenience of the arrangement, the circuits as circuits will be very likely to be OK and the assessment of inconvenience and hazard is down to the designer.

 

[Midwest]

No only 2 rings for power
yes all fridge freezer tumble drier wash machine, boiler, worktop skts
kitchen 1st and 2nd on one 32a circuit

i need to know a regulation to state what I think before I say it if there is one, someone said segregation of circuits , would that apply to this

OP, I note from your profile, you are an electrician of 17 years experience and joined this forum some two years ago. You do not have many posts, but if you peruse this forum, you should have seen plenty of people starting threads with a 'I've got a friend, whose had his house wired by an electrician, but he's got no certificate, or I think they've used the wrong etc etc'.

As an electrician, you will have a copy of BS7671, which as a start, you could refer to the regulations you think have not been complied with.

You'll perhaps understand why some of the responses have been a little bit curt. If you could be more forthcoming from your first post, and quote the appropriate regulations, the replies would be more informative from the very experienced forum members, IMO.

 

[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.