Worldwide ring mains

[PEG]

Keep thinking fella,its nice to see a bit of inventing goin on. Some ideas, although very useful,never convert to wide use or income....keep at it,everybody laughed at my cordless-generator and solar powered sunbed......Good luck.

 

[Engineer54]

According to wiki, the UAE, Singapore and Indonesia use ring final circuits.

Hell of a lot more countries use the British ring main than you have mentioned above. And that's not including the majority of prestige buildings in Saudi and the Middle East as a whole!!

 

[maxfresh]

here in ireland n our latest regs ring circuits are not allowed in kitchens anymore and two radials must be provided

 

[Engineer54]

here in ireland n our latest regs ring circuits are not allowed in kitchens anymore and two radials must be provided

So what's the dumb reason behind that little cracker then??

 

[Knobhead]

It’s the new reg’s, what’s reason or logic got to do with it!

I’ve got to admit that one defies logic!

 

[maxfresh]

So what's the dumb reason behind little cracker then??

God knows ,id say its because more things can go wrong with a ring final cct compared to a radial

 

[Engineer54]

God knows ,id say its because more things can go wrong with a ring final cct compared to a radial

Like what?? These would both be new circuits supposedly installed to the current Regs/codes by, one would hope competent electricians!!!

More like Ireland has the same problem as the UK, to many fast track wanna-be electricians that aren't competent in testing or fault finding anything except on single length's of cable...

 

[maxfresh]

Like what?? These would both be new circuits supposedly installed to the current Regs/codes by, one would hope competent electricians!!!

More like Ireland has the same problem as the UK, to many fast track wanna-be electricians that aren't competent in testing or fault finding anything except on single length's of cable...

If an open circuit occured on the ring and is unnoticed then effectively it is two radial on a 32 amp mcb wired in 2.5
or
mr. d.i.y. could mix up ends into different mcbs (even though d.i.y.ers shouldn't attempt this sort of thing)

All sparks here have to do a 4 year apprenticeship

 

[Guitarist]

i find the friction terminal screw tunnels on new mk gear a real chore tbh.

So do I, along with the fact that if you nip the screws up a bit too tightly, they damage easily.

 

[Engineer54]

If an open circuit occured on the ring and is unnoticed then effectively it is two radial on a 32 amp mcb wired in 2.5
or
mr. d.i.y. could mix up ends into different mcbs (even though d.i.y.ers shouldn't attempt this sort of thing)

All sparks here have to do a 4 year apprenticeship

What's Mr DIY got to do with anything, you can't base electrical Regulations on what they might or might not do...
As i've stated in other threads, there are pro's and con's for every type of circuit!! Designed and installed correctly there shouldn't be any problems with either type of circuit....

This old chestnut of a ring becoming open circuit, in all the years i've been in this industry i've never come across such a scenario.

Now that is good to hear, about the 4 year apprenticeship... Just keep your fingers and toes crossed that it remains that way, and that the powers that be in Ireland, don't allow your standards to fall, allowing the leeches and these fast track training centres in through the back door... lol!!!

 

[Brightspark2]

This old chestnut of a ring becoming open circuit, in all the years i've been in this industry i've never come across such a scenario.

I come across it quite often actually, not in houses but in commercial and industrial premises...

Either a break in just one of the conductors or all of them...

Quite common...the last EICR I did had 2 out of the 4 rings like this...

Sent from my Xperia S using next doors WIFI.

 

[Engineer54]

I come across it quite often actually, not in houses but in commercial and industrial premises...

Either a break in just one of the conductors or all of them...

Quite common...the last EICR I did had 2 out of the 4 rings like this...

Sent from my Xperia S using next doors WIFI.

I can only ask HOW did they become open?? Surely using that analogy, it could also be applied to a Radial circuit.

As i have stated, never seen a ring becoming open circuit. Not saying it can never happen, but i would say that it's a lot rarer than some would have us believe. Can't really grasp how a professionally installed and tested ring circuit can suddenly go open, without someone's intervention...

 

[Knobhead]

without someone's intervention...

I think thats just hit the nail on the head.

 

[Geordie Spark]

Also, car head lamps with a photo cell in the that picked up lights from another car comming towards you and would auto dip. Trouble is I thought it'd react too late, however think Merc are doing it now

I would want it to work the other way round ...... to dazzle those who dazzle me !!! :devil2:

 

[Brightspark2]

I can only ask HOW did they become open?? Surely using that analogy, it could also be applied to a Radial circuit.

Very true...As you mention its mostly down to peoples intervention, extending the ring incorrectly etc and as you rightly say the other faults could happen to a radial such as broken conductors, brunt out etc etc but as is being said with a ring you then theoretically have to radials protected by a 32A OPD...

I'll opt for the horses for courses option they both have there pro's and con's it just depends and the jobs demands as to which is installed...