25A MCB on 2.5mm kitchen radial

[Badged01]

so how is a 32A better than 2 x 20A. ???

Because if you remove some of the sockets as well it stops her indooors plugging in too many fancy appliances then expecting me to pay the bills for it all ..... :love:

 

[bigspark17]

Im wondering your reasoning to put two radials in instead of ring? Or st least 4mm radials.. Kitchen/utility is where any households loading is!

 

[Pete999]

BS 7671 radials for 13amp sockets are 20amp wired in 2.5mm2 or 32amp wired in 4mm2 why are you considering using a 25amp cb?

 

[Plonker 3]

Maybe because the installation method may allow the CCC of the cable to carry 25 amps.

 

[Pete999]

All this iffing and whatifing, if the circuit is for a specific piece of equipment, the design it properly taking into account all the variables. If the radial is for socket outlets then use a 32 amp RFC, 20amp radial or 32amp radial

 

[joeyscurlock]

Im wondering your reasoning to put two radials in instead of ring? Or st least 4mm radials.. Kitchen/utility is where any households loading is!

It's just how I have always be taught

 

[Plonker 3]

Well credit to the OP he has admitted there mistake, now looking at ways of getting it correct with minimal inconvenience.

I am sure we would all usually install a 32 amp circuit for a kitchen, unless we knew other wise what was going to be used in it.

A 25amp MCB may just be the answer they need to sort out the problem.

 

[telectrix]

Because if you remove some of the sockets as well it stops her indooors plugging in too many fancy appliances then expecting me to pay the bills for it all ..... :love:

you buy her these:

 

[joeyscurlock]

BS 7671 radials for 13amp sockets are 20amp wired in 2.5mm2 or 32amp wired in 4mm2 why are you considering using a 25amp cb?

I'm afraid i may be over 20A maybe 22-23A. I understand its not the best way around it, but I was checking if it is possible. For the cable to withstand the loading

 

[MDJ]

I would seriously recommend the Guy stick in 2 20 amp circuits and forget all about it, well after testing certification and Part Peeing of course.

 

[telectrix]

check out the time/current curves of 20A MCB. at 25 A should give her time enough to burn the dinner.

 

[joeyscurlock]

Well credit to the OP he has admitted there mistake, now looking at ways of getting it correct with minimal inconvenience.

I am sure we would all usually install a 32 amp circuit for a kitchen, unless we knew other wise what was going to be used in it.


A 25amp MCB may just be the answer they need to sort out the problem.

Thanks for the help, I have never thought of even putting in a ring and never have done in a domestic situation, just how I have always been told. So a 25amp MCB will be SAFE for the cable?

 

[Pete999]

A bell rings somewhere 27amps for 2.5 not sure where I read it though

 

[MDJ]

Thanks for the help, I have never thought of even putting in a ring

Not trying to be difficult or sarcastic Joey but that suprises me, I have never heard anyone not be trained in installing a ring main in a domestic setting. To be honest it is standard and school boy stuff. Out of interest Pal who trained you? a company or an individual?

 

[MDJ]

A bell rings somewhere 27amps for 2.5 not sure where I read it though

Again it is a standard value from BS7671, look at the tables and it will give you the values, method C clipped direct from memory