Ring main.

[JKMRK1]

Question I have is, is it ok to have x2 ring main circuits on one 32amp type B MCB??

If so does this meet the current regs.

TIA.

 

[Mark Wright]

I have also heard of vast Tree circuits in european countrys maybe this is just a myth?

not from the MCB but one run to a junction box from MCB then branches off in every direction - power Radial not lighting can anyone confirm this?

 

[DPG]

As has been mentioned before, more than one radial into an MCB is one circuit. It's a radial.

 

[Electrics]

As has been mentioned before, more than one radial into an MCB is one circuit. It's a radial.

I know that but from the perspective of the power being drawn/inherent safety i don't see the difference between two radials or two rings with the same amount of sockets in the one MCB.

Is there one that i'm missing? I'm coming back to electrics fresh after a very long layoff so i could well be talking horse manure.

Keen to learn

 

[Pete999]

I have also heard of vast Tree circuits in european countrys maybe this is just a myth?

not from the MCB but one run to a junction box from MCB then branches off in every direction - power Radial not lighting can anyone confirm this?

Yes I can confirm, especially in the former USSR, and former satellite countries

 

[Mark Wright]

Thanks
from this french web site suggests more one connection into MCB - by twisting but recommends wago

Plusieurs cables à raccoder sur un disjoncteur

Bonjour à tous, Je vais commencer l'électricité de ma maison. J'ai une relative connaissance théorique dans ce domaine, nettement moins dans la...

translate.google.co.uk

I will look at some russian stuff later

 

[DPG]

Twisting- uuurghhhh .

 

[Mark Wright]

and this site Google Translate - https://translate.google.co.uk/translate?hl=&sl=fr&tl=en&u=https%3A%2F%2Fschema-electrique.net%2Fschema-electrique-de-prise-de-courant-norme-et-cablage-du-circuit.html

two feeds into one MCB
Star Radial from one JB
[automerge]1593257112[/automerge]
check this out!!!!
the octopus thats brilliant

Préparation et réalisation d'une pieuvre électrique en autoconstruction

Comment calculer, préparer et réaliser vos pieuvres électriques en fonction de vos plans éclairages et à l'aide d'un fichier Exel

entraide.asteolelec.fr

[automerge]1593257969[/automerge]
test

;

 

[Pete999]

Thanks
from this french web site suggests more one connection into MCB - by twisting but recommends wago

Plusieurs cables à raccoder sur un disjoncteur

Bonjour à tous, Je vais commencer l'électricité de ma maison. J'ai une relative connaissance théorique dans ce domaine, nettement moins dans la...

translate.google.co.uk

I will look at some russian stuff later

I was supervising Sov Sparkies during the rewire of leased property to be used as leetings for Embassy staff including me and mine, we use UK kit but had to concede to the Sov way of doing things, so 2.5 from DB to sockets on a 20A Radial, did try to tutor them on the UK way, but banging my head on a brick wall springs to mind, they hadnever seen or used an RCD before I introduced them on the install.

 

[ipf]

Twisting- uuurghhhh .

That sounds like a hernia...…!

 

[Mark Wright]

I was supervising Sov Sparkies during the rewire of leased property to be used as leetings for Embassy staff including me and mine, we use UK kit but had to concede to the Sov way of doing things, so 2.5 from DB to sockets on a 20A Radial, did try to tutor them on the UK way, but banging my head on a brick wall springs to mind, they hadnever seen or used an RCD before I introduced them on the install.

Thank you for your info - personally I don't object to some of the european ways, I'm sure they think the Ring is a bit strange - but I think in Russia they use those twist connectors like in America and I don't like them, but there are some good Russian/German web pages on electrical drawings.

 

[Pete999]

Thank you for your info - personally I don't object to some of the european ways, I'm sure they think the Ring is a bit strange - but I think in Russia they use those twist connectors like in America and I don't like them, but there are some good Russian/German web pages on electrical drawings.

None of my Guys used fire nuts I provided strip connectors (before Wagos) and Wagos when they were introduced, used a lot of Wagos, reckon they were pocketing some here and there for PJs they were not paid much by the way, had to limit the supply bit like a drug dealer lol, then the Sovs opened a B and Q, that was interesting to say the least.

 

[Mark Wright]

Yes Wago addiction is one of the biggest problems of our time

 

[Pete999]

Yes Wago addiction is one of the biggest problems of our time

Psssst £ 20 a packet plus my outlay, no middle man.
[automerge]1593269891[/automerge]

Yes Wago addiction is one of the biggest problems of our time

As an aside, still got my Sov test lamp, a classic bit of kit, no pics cus it's in me ex Sov box in the Garage, what's the make of those voltage testers? Stienel I think, I ordered about 30 of the cheapest one for my Lads, baskets were flogging them, still B and Q solved that issue, we were allowed 20Amps per dwelling, had an electric fire for emergencies, plugged I, took the main fuse out (don't ask about discrimination) it don't exist in a Communist state) had to call Mr fixit cus I wasn't allowed to touch the mains for fear of the Gulag, cost me my Steinel tester, still never mind eh? My Mrs was chewing he finger nails in anticipation of a visit from the Keith George Brown thugs. lol

 

[ebee]

I was talking ref our regs BS7671 only. other countries will differ but Europeans will have many similarities with ours although still some different quirks.

Trees are, in actuallity, the same whether they are all in the fuseway or in joint boxes (including ceiling roses, they are just a more pretty variant of a joint box really) .

Some of our lot get a bit hung up thinking that whilst a tree might be OK if the first split is from a joint box yet not at the fuseway, which is not logical if you think about it but it`s the wat they`ve been brought up.
Yet others seem to think a radial must to 1,2,3,4,5 ..... to N (N being the total number) in a straight chain.
Whilst more elegant and also easier to test, it is not mandated, just in the same way that a 1 ring ring final is not mandated.
Lassoos again likewise.
Just because something is not listed in the OSG (standard circuits) or the informative appendices of BS7671 does not mean that they do not conform to the regs.

 

[Mark Wright]

Psssst £ 20 a packet plus my outlay, no middle man.
[automerge]1593269891[/automerge]

As an aside, still got my Sov test lamp, a classic bit of kit, no pics cus it's in me ex Sov box in the Garage

I have have a old(60s) Readers Diggest that shows you how to make your own continuity tester with this and your test lamp could really be something beautiful.