Discuss Radials V Ring mains in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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Hi all,

This may be a common topic and may already have been spoken about 100s of times so forgive me in advance.

I have always wired in ring mains for my sockets up until recently..

I came across an install where all sockets were wired in 2.5 radials protected by 20A RCBO they had wired 3 bedrooms all on separate 2.5 radials (Loft & 1st floor)
i did question why each room was separate and the response i got was "customers request due to computers"

I am hearing more and more people wiring 4mm radials protected by 32A as its "convenient"

whats peoples general thoughts on this?
 
Each room is on a separate radial with around 4 sockets in - very weird arrangement i know
 
Hi all,

This may be a common topic and may already have been spoken about 100s of times so forgive me in advance.

I have always wired in ring mains for my sockets up until recently..

I came across an install where all sockets were wired in 2.5 radials protected by 20A RCBO they had wired 3 bedrooms all on separate 2.5 radials (Loft & 1st floor)
i did question why each room was separate and the response i got was "customers request due to computers"

I am hearing more and more people wiring 4mm radials protected by 32A as its "convenient"

whats peoples general thoughts on this?

Great idea.
20A is plenty for a bedroom and when the kids don't get off the consoles you can switch off the mains to their bedroom.
 
Each type of circuit has its merits, whatever suits the need of the installation and the client.
 
Take it you do 4mm Radials?
Not any more Sparky 10, as I have been retired for a few years, but to answer your question, yes I did, but always in conjunction with the restraints and the advice in Appendix 15 BS7671, floor area etc.
I also ran 6mm radials whilst working in Canada @110Volts using MK 110V socket outlets, had nil trouble with connecting them up either. Just saying.
 
Not any more Sparky 10, as I have been retired for a few years, but to answer your question, yes I did, but always in conjunction with the restraints and the advice in Appendix 15 BS7671, floor area etc.
I also ran 6mm radials whilst working in Canada @110Volts using MK 110V socket outlets, had nil trouble with connecting them up either. Just saying.
Just to be a Pedant they are not Ring Mains any more they are Ring Final Circuits or RFCs
 

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