Garage supply

[Bristolsparky]

Hi I want to install a supply for garage. Nothing much couple of sockets, for charging and a few lights.

My senario is, I am gonna install a rcd outside socket to the house, from the downstairs ring circuit., then link from this socket to my garage supply. then I will have the garage board.

Now is this gonna upset Napit assessment.

I dont have spare ways on the dist board. Also I dont want to change the board yet as I would like to rewire in the near future.

Any adivce would be appreciated.

 

[paul b b]

Can you not split the tails to a little board?

 

[Sharpend]

Why an rcd outside SOCKET?

 

[paul b b]

Are the sockets already on an rcd?

 

[steptoe]

An RCD fused spur (inside) would be much better if you dont want to put another CU in.

 

[Sharpend]

+1 my thoughts exactly steps. You reading my mind ??

 

[steptoe]

BTW, there are a hundred the questions,

How far to the garage,

Earthing type,

Extraneous parts

etc etc

 

[paul b b]

It would be steps but it will limit the shed to.13amps. really depends on what he's doing inthere I suppose

---------- Post Auto-Merged at 15:57 ---------- Previous post was made at 15:55 ----------

BTW, there are a hundred the questions,How far to the garage,

Earthing type,

Extraneous parts

etc etc

No question there steps...tt surely lol

 

[steptoe]

Its a half ar5ed job anyway Paul, dont see how during more corners is going to make much of difference,

After all, he is competent, NAPIT will confirm this as soon as he signs the cheque.

 

[Sharpend]

It'll be alright until he is asked to test at garage socket!

 

[paul b b]

To be honest bristol.....if its for an assessment I would be splitting tails and using swa. I know spring off a socket may be compliant but its a bit of a half hearted job in my eyes. do it properly and do it once.

is it for you or a customer?

 

[Bristolsparky]

was gonna put a garage enclosure 25a rcd 30ma, with 2 mcb's one for a small ring and one for 2 garage lights.

Was gonna install an outside socket to the house ie 2g rcd outside socket weather proof, from my down stairs ring, but then link off the back of this with 4mm swa for the garage supply. The house has an rcd too.

The whole supply to garage would then be proected from 32a MCB, the swa cable feeding the garage would have rcd at from end

and i would then have an 25a RCD protected board with breakers in my garage.

I could then show my testing process, plus complete EIC for the new dist board in garage. The shed will only really have lights working from time to time and an odd charger. so will barely be pulling more than 6amps even at max so about 1300 watts even if I pushed for a 2kw heater at like 8 amps.

To splitt tails is not an issue in the cupboard, its just getting out the house I have to pass through front room to get to the back of house, that will mean box trunking, something I was hoping to not to do yet.

I already have a socket in the house adjacent to where I want to exit for the outside socket.

 

[sparkytim]

So are you going to spur of your Ring to your outside socket then spur of again to Garage?

Can you see any problem with that?

 

[paul b b]

I was presuming he was going to make the outside socket part of the ring. may have trouble getting all those cables in though

 

[PC Electrics]

Don't feed the Troll fellas

 

[Sharpend]

Maybe he's not ready to be assessed! Still under part p his signature is as good as anybody else.

No wonder the cowboys are laughing.

 

[paul b b]

Don't feed the Troll fellas

Errrr....I'm lost

 

[Bristolsparky]

funny this, its ok to install an outside socket as part of the ring and then if you wish you can spur off ie once per socket for argument sake, but its not adequate to spur off the same ring, supply although there is adequate protection available all round, so it would seem then I have to split the incoming tails, not a problem.

You see having the exiting ring on a 32A supply and sending a spur of a 25a supply to the garage enclosure with a 16a socket supply and a 6a light supply I assumed was ok.

I was hoping for advice, from a great forum with or from guys that have read the regs book like they read the sports pages.

Help and advice is far more polite. This would encourage people to look at search those answers the good people have given, thus helping in the learning process.

Naturally I will take your sub standard answers except for the few at the start of the thread, and go from a seprate supply.

cheers suys

 

[paul b b]

Sorry if I have upset you bristol... not my intention. I was trying to decipher exactly what you were trying to do and whether your existing circuit was ok to take the shed supply. as I said, personally for an assessment I would go for a new supply but its not in the regs that its compulsory. just my way of doing it. if a fault developed in the out building it would be eAsy to disconnect until such a fault is rectified. like I said...not the regs just the way I recommend to have it done when I do it.

the other thing to look at is discrimination. if your swa is rcd protected then you don't need to fit one in the shed. you can just use a main switch and 2 breakers.

hope this helps

 

[Bristolsparky]

much appreciated Paul. I was thinking of descrimination, but only to the point if I install rcd in the shed then any faults within the shed hopefully go there first, whereas if the swa cable gets a fault that would trip back in the house., The only problem I considered was the fact that my shed RCD may have a slower ms rating to the one in house let alone its tripping current, one maybe 24ma the other could be 18ma who knows until I test.

I think I will stick with splitting the incomer.

Trunking here we come.....Thanks for the advice Paul.....