Wiring House -which Circuits needs to be RCD

[mojo1234]

Hi

I am wiring 2 story 5 bed room house and the landlord wants each circuit on its own which of the following needs to be RCD:

1- Bed rooms each on its own ring and has 4 sockets .
2- Bed rooms each on its own radial and has 1 pendent light.
3-Stairs its own lighting radial and has 3 pendent lights.
4-Stairs has its own Ring and has 3 sockets.
5-Kitchen on its own Ring and has 8 sockets.
6-Kitchen has its own Lighting Radial and has 8 spot lights.
7-Kitchen Cooker on its own radial.
8-Bathroom Lights on its own radial and has 8 spot lights-shaver and Fan
9-Bathroom Electrical Shower on its own Radial
10-Bathroom under floor Heating Matt on its own radial.
11-Small toilet under stairs on its own radial and has 1 light and Fan
12-Garden Lights wall mounted on its own Radial.
13-Garden 1 COMANDO WEATHER PROOF socket on its radial.
14-Garden Shed which has its own 2 way fuse box and wired from main consumer unit by armourd.
15-House Smoke alarms on its own radial.
16-Security alarm panel on its own radial.

regards

 

[drew35]

All

of

them

!

 

[Deleted member 26818]

For domestic installations, the only circuits that require RCD protection are those of a location containing a bath or shower.
There are requirements for RCD protecting for socket-outlets intended for general use, and those used to supply mobile equipment outdoors.
There are also requirements for RCD protection inb certain circumstances for cables concealed in walls.
You may find it easier to provide RCD protection for the whole circuit where RCD protection is required for socket-outlets or concealed cables.

 

[MDJ]

I wouldn't put the smoke alarms or security alarms on RCDs myself, unless of course the installation method means you have to.

 

[moddeydhoo]

1 buy a copy of bs7671 17th edition.
2 hire an electrician.

 

[trev]

The idea of splitting the circuits in this way is frankly ridiculous. I can see what the landlord is trying to achieve, he doesn't want tripping in one bedroom to inconvenience a tenant in another but come on, we're the qualified people here. We are supposed to advise the client what is best for their needs, you may well have done this, I have no way of knowing but there are far better ways of dividing this installation into circuits.

 

[Farmelectrics]

dual rcd board safety before inconvienace

 

[Octopus]

For minimum inconvienience you need a 18+ way circuit board and 16 RCBO's

And please don;t take this the wrong way but nearly all of your previous posts have been "looking for work" and now you come in with this?

 

[Guest55]

dual rcd board safety before inconvienace

dual ??
i'd be splitting that lot over 4 rcds + rcbo's for all lighting + unprotected ways for smokes and alarm if surfaced fixed.
2 rcd's just wouldnt cut it realistically.

 

[HandySparks]

If the landlord wants the circuits divided this way to minimise a fault in one room affecting other rooms, then, as Murdoch says, put them on RCBOs.

How is the wiring to be installed? If run in T&E and buried in plaster, then all circuits will require RCD protection, except the SWA supply to the shed (which will then need its own RCD).

Since you've been looking for work as an electrician's mate, who's designing this job and who's going to be notifying it?

 

[Octopus]

Or do it like a care home. Sub mains to each "suite" and a small DB in each one.

Potty idea the landlord has.

You as designer/installer/inspector have a lot of weight on your shoulders.

 

[ian.settle1]

For domestic installations, the only circuits that require RCD protection are those of a location containing a bath or shower. What about circuits which are less than 50mm and not mechanically protected
There are requirements for RCD protecting for socket-outlets intended for general use, and those used to supply mobile equipment outdoors. You have just contridicted your first statement?
There are also requirements for RCD protection inb certain circumstances for cables concealed in walls. You have just contridicted your first statement?
You may find it easier to provide RCD protection for the whole circuit where RCD protection is required for socket-outlets or concealed cables.You have just contridicted your first statement?

Why make your first statement then contridict yourslf with the rest

 

[Hobsoni]

Kitchen ring with 8 sockets............but you put a bedroom on its own ringmain??

me thinks this guy is not an electrician.

(and i have read the other stuff.......mmm)

 

[Octopus]

Guys I think its time we all sat back and let the OP update us........

 

[Hobsoni]

Guys I think its time we all sat back and let the OP update us........

Am i missing something here?? What is OP??

please tell me i'm gonna kick myself when i find out??

- - - Updated - - -

Guys I think its time we all sat back and let the OP update us........

Am i missing something here?? What is OP??

please tell me i'm gonna kick myself when i find out??

 

[Deleted member 26818]

Why make your first statement then contridict yourslf with the rest

I haven't contradicted myself.
I suggest you peruse BS7671.
You will find that the only place in BS7671 where there are requirements to provide RCD protection for circuits is in Chapter 7 'Special Locations'.

 

[HandySparks]

Am i missing something here?? What is OP??

please tell me i'm gonna kick myself when i find out??

OP stands for Original Poster (in this case mojo1234). It's always worth typing an unknown term into Google to see if it sheds any light, which it usually does.

 

[Hobsoni]

Ah, Thanks.

i'm actually intrigued to see what he comes up with. Probably be asking to borrow tools next! lol

 

[thekingiam]

the landlord probably wants to seperate all circuits incase he wants to make into bed sits and put seperate meters in at a later date.it's amasing how many things can be pluged into a small bedsit all at once,he has probably had problems in the past with overloading and everything going off.i wouldask him his motives for this design but what the customer wants he gets if he is willing to pay for it.

 

[thekingiam]

i do wonder what maximum demand would be and what size fuse you are going to ask the dno for?

 

[somersetsparks]

i do wonder what maximum demand would be and what size fuse you are going to ask the dno for?

Surely 100a? its still only a normal gaff, just with a ridiculous amount of puny circuits - an I&T nightmare lol!

 

[bugsy]

For minimum inconvienience you need a 18+ way circuit board and 16 RCBO's

And please don;t take this the wrong way but nearly all of your previous posts have been "looking for work" and now you come in with this?

Seems his found it - now looking for sparks!

 

[Tidy Max]

OP stands for Original Poster (in this case mojo1234). It's always worth typing an unknown term into Google to see if it sheds any light, which it usually does.

Sorry to digress but its also worth knowing that when typing into google using the define function is very useful, in this case...

'Define: OP'

It searches online dictionarys and gives you a definition without leaving google