is this allowable

Discuss is this allowable in the Electricians' Talk area at ElectriciansForums.net

C

Chrislittle

Quick question, I don't really do house rewires but a friend asked Is it possible to run a 2.5mm ring feeding several fcu. These would then feed several double sockets. the ring would be connected into the supply side of fcu and only the 13a double socket would be in the load.

So example x5 fcu each one feeding its own double socket

I didn't see a problem but I could be completly wrong as I don't generally do that work
 
I'm too confused to even take a stab at ths one so I'll leave it for someone more local to you who might understand your layout better.


Are you a qualified electrician or is this a DIY job?
 
Just finish of my training just test and inspection to do. The last job similar to this was I run a radial about 5 fcu each one feeding one of those ceiling ac units.

The job is a mate's kitchen diy jobby he just asked me a question been bugging me as keep you ting myself
 
Nothing electrically wrong with the set up, just totally bizarre as to why anyone (certainly an electrician) would use such a wiring system. Basically defeats the point of installing a ring circuit!!
 
You could be right, at first I assumed it might be some bizarre UK standard installation I hadn't heard of.
 
Chrislittle said:
Quick question, I don't really do house rewires but a friend asked Is it possible to run a 2.5mm ring feeding several fcu. These would then feed several double sockets. the ring would be connected into the supply side of fcu and only the 13a double socket would be in the load.

So example x5 fcu each one feeding its own double socket

I didn't see a problem but I could be completly wrong as I don't generally do that work
Click to expand...

Im confused too, I think ! Or am I ?

Do you/your friend mean as in a kitchen where many kitchen fitters put a fcu in the ring, above the kitchen worktop which then feeds a socket outlet for a freezer, washing machine etc ? In effect a spur from the rfc for each appliance ?
 
Basically he wants to run a rfc in kitchen for his appliances but use fcu's supplying double sockets. Instead of pulling appliances out to get to sockets he wants to fit fcu above worktop then run cable in wall to double sockets. If that makes more sense
 
I assume he's got 2 or 3 undercounter appliances so why not just run each one on its own radial and it's own MCB in the CU. He'll be able to isolate them individually that way without having a wall full of FCU's.
 
Marvo said:
I assume he's got 2 or 3 undercounter appliances so why not just run each one on its own radial and it's own MCB in the CU. He'll be able to isolate them individually that way without having a wall full of FCU's.
Click to expand...

No No No!
A kitchen will run perfectly fine on a single RFC no problem.
What is it with this running a radial to each appliance?!?!
 
NJG28 said:
Im confused too, I think ! Or am I ?

Do you/your friend mean as in a kitchen where many kitchen fitters put a fcu in the ring, above the kitchen worktop which then feeds a socket outlet for a freezer, washing machine etc ? In effect a spur from the rfc for each appliance ?
Click to expand...

How is that there's always a "friend" or a "My sparky is away in holiday" involved somewhere??

Anyway, my answer to the question (for what it's worth as I'm only a plumber and gasfitter who "knows a bit about electric") is it's a ludicrous and expensive idea.

My suggestion to getting it done is find a proper spark and get him / her to do it and pay them the going rate.
 
Thanks for your suggestion, like any of you if a friend as for advice you help where possible. What I've asked all I have encountered on here other than a few good responses in the end its is negativity and silly responses, don't really boast well if people not in the trade look up stuff and get directed here. At the end of the day like my position we all start out with little experience older we are more we get. Unfortunately this is not somethin. I have come across so sought advice here. Which I won't be doing again.
 
Chrislittle said:
Thanks for your suggestion, like any of you if a friend as for advice you help where possible. What I've asked all I have encountered on here other than a few good responses in the end its is negativity and silly responses,don't really boast well if people not in the trade look up stuff and get directed here. At the end of the day like my position we all start out with little experience older we are more we get. Unfortunately this is not somethin. I have come across so sought advice here. Which I won't be doing again.
Click to expand...

Ask a silly question............
 
You mean a kitchen ring with an isolation point (fcu) to a double socket feeding an appliance? Thousands of kitchens are Wired like such. Is that what you mean?
 
Chrislittle said:
Thanks for your suggestion, like any of you if a friend as for advice you help where possible. What I've asked all I have encountered on here other than a few good responses in the end its is negativity and silly responses, don't really boast well if people not in the trade look up stuff and get directed here. At the end of the day like my position we all start out with little experience older we are more we get. Unfortunately this is not somethin. I have come across so sought advice here. Which I won't be doing again.
Click to expand...

It does get tiresome to read day-after-day BADLY worded questions that make no sense because the OP couldn't be bothered to read what he / she has typed and ask themselves "if I was a stranger reading this would I understand it?" before pressing the "post button".

Take a bit more time to THINK about EXACTLY what it is you're trying to ask and the responses will be a bit more positive.

It really IS that simple !!
 
Archy Styrigg said:
No No No!
A kitchen will run perfectly fine on a single RFC no problem.
What is it with this running a radial to each appliance?!?!
Click to expand...

In just finishing the 2400, or what ever it's called now. And the only exception to this was maybe a radial to the dishwasher because you may get more then 20A between the socket legs. Which apparently is not allowed.

I'm sure one of you domestic guys will confirm or beat me down.
 
LeeH said:
In just finishing the 2400, or what ever it's called now. And the only exception to this was maybe a radial to the dishwasher because you may get more then 20A between the socket legs. Which apparently is not allowed.

I'm sure one of you domestic guys will confirm or beat me down.
Click to expand...

I may have misunderstood here, but 20 Amps? Where is this figure from? Daz
 
LeeH said:
In just finishing the 2400, or what ever it's called now./ And the only exception to this was maybe a radial to the dishwasher because you may get more then 20A between the socket legs. Which apparently is not allowed.

I'm sure one of you domestic guys will confirm or beat me down.
Click to expand...


Lee - is there a bit of your text missing here / ? - can't seem to get what you're saying

Are you talking about an unbalanced RFC causing excessive current in one leg - and the need to feed the DW separately to remedy the problem?
 
Hi mate,

Archy pointed out a kitchen will run fine on 1 RFC. I tend to agree, my house has not burnt down as of yet.

I did a mock exam and the model answer suggested that it was prudent to put a Dishwasher on its own 16A radial.

This was too reduce the likely hood of having 20A between 2 sockets, 1 length of 2.5.

I've just looked in Appendix 15 and cannot find anything to support it but I will ask my tutor and see if there is anything in black and white RE this 20A.
 
I have broken into a ring, to feed an RCD spur to then go on to feed other items, but cant say as I would do it quite this way.

I am sure you have logical explanation in your head somewhere...
 
There is a bit in app15 (RFC part) that suggests appliance greater than or equal to 2kW should be fitted on their own dedicated radial circuit.
 
Chrislittle said:
Basically he wants to run a rfc in kitchen for his appliances but use fcu's supplying double sockets. Instead of pulling appliances out to get to sockets he wants to fit fcu above worktop then run cable in wall to double sockets. If that makes more sense
Click to expand...

There must be literally thousands of kitchens wired up exactly that way to provide isolation to under-counter appliances without having to touch the appliance. The other method is to fit appliance sockets in adjacent kitchen cabinet & drill out of sight hole to allow plug to pass through.
Either method is acceptable
 

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