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Discuss I never install ring circuits, the potential for danger is unacceptable in the Electrical Forum area at ElectriciansForums.net

ZEDEZ

Regular EF Member
I’d like to know if anyone else here refuses to install ring circuits in domestic premises.

For me it’s either a 20a radial / tree circuit with 2.5mm, or a 32 radial / tree circuit with 4.0mm.

Frankly I’m tired of finding broken ring circuits on 32a CB’s, as well as mismatches on end to end tests. It drives me nuts on jobs that should be simple.

I wish we would get rid of this ridiculous practice here in the UK.

I know some of you will say there’s nothing wrong with it when it’s properly installed and tested, but inevitably at some point in the future someone will come along and disconnect a conductor unknowingly while changing outlets on the circuit.

Testing is more complicated, and diagnosing faults on a ring also.
 

ipf

Forum Mentor
Nothing worse than what you call a 'tree circuit' for fault finding. Five or six legs, may be more and testing at each when installed, too. Rubbish.
 

ZEDEZ

Regular EF Member
Nothing worse than what you call a 'tree circuit' for fault finding. Five or six legs, may be more and testing at each when installed, too. Rubbish.
I only ever make tree branches with wago boxes, with never any more than 2 cables in a socket installation box.

I always test at each socket outlet anyway so that’s no extra work.

I disagree, fault finding on a broken ring circuit with a figure 8 somewhere is worse.
 

Sintra

The Innkeeper
Staff member
Admin
Nothing wrong with a ring final circuit. It’s the uneducated/ unqualified who mess with them that causes the problems.
 

ZEDEZ

Regular EF Member
That is utter rubbish, the rfc is the best method IMO.
Funny that.

The RFC is an artefact of materials shortage during WWII, and isn’t really used anywhere else in the world spare a few exceptions.

If it were the best method, it would have been taken up elsewhere.

I don’t know why so many electricians love the RFC other than it’s familiar
 

ipf

Forum Mentor
Funny that.

The RFC is an artefact of materials shortage during WWII, and isn’t really used anywhere else in the world spare a few exceptions.

If it were the best method, it would have been taken up elsewhere.

I don’t know why so many electricians love the RFC other than it’s familiar
During that time, after WW11, we developed the best and safest electrical supply system in the world. Even today look at some of the rubbish in foreign countries.
 

SWD

Gender neutral
Electrician's Arms
A question for the OP, what is the potential for danger, please explain as then I may make a decision as to whether it's acceptable or not?
 
Last edited:

Welchyboy1

Electrician's Arms
I think your overestimating the danger somewhat

Rfc's are great but i only really use them in kitchens now and unless its a large house would opt for 20a radials everywhere else

But lets be honest here, even in the case of a broken ring, the circuit will likely never see anywhere near enough load for any duration to be a danger of overloading the cable, unless maybe an exceptionally loaded kitchen circuit, especially given the case that even most ovens etc are on their own 16a radials now

Ive found probably hundreds of open ring circuits but next to none that i can remember with any signs of overload unless connections are loose

Id wager 90% of 32a ring circuits have never seen past 20 amps
 
Last edited:

Matthewd29

Regular EF Member
Absolutely nothing wrong with a ring circuit. I would never install a 'tree's circuit for sockets. Ever.
 

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