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J

JKMRK1

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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.
 
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Pete999

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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.
No not really, a circuit originate from 1 OCPD, secondly it's not a "Ring Main" it's a Ring Final Circuit RFC, pedantic but correct terminology counts these days.
 
J

JKMRK1

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  • #4
Two rings of a circuit, got the regs?
Yes I have the regs book, which states final circuits should be connected to a seperate way in the CU. But I've seen so many others argue this is OK??
 
buzzlightyear

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No is the answer, you will overload the mcb
Are you adjusting a circuit or putting another one in and have no room in CU.
 
DPG

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Yes I have the regs book, which states final circuits should be connected to a seperate way in the CU. But I've seen so many others argue this is OK??
I've never seen many people argue that two ring finals one one MCB is a good idea.
 
J

JKMRK1

  • Thread Starter Thread Starter
  • #7
No is the answer, you will overload the mcb
Are you adjusting a circuit or putting another one in and have no room in CU.
I've come across this in the house I've just purchased. There's a spare way in the board I'll add another MCB and seperate them.
 
Pete999

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Yes I have the regs book, which states final circuits should be connected to a seperate way in the CU. But I've seen so many others argue this is OK??
I'll reiterate, a circuit originates from an individual OCPD if some dipstick has decided to combine 2 RFCs into 1 circuit incorrectly then He / She needs to hang up their screwdrivers, and take up another Trade.
 
J

JKMRK1

  • Thread Starter Thread Starter
  • #10
I've never seen many people argue that two ring finals one one MCB is a good idea.
I'm not saying it's correct just saying what I've seen. That's why I've asked the question to make sure its correct.
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I'll reiterate, a circuit originates from an individual OCPD if some dipstick has decided to combine 2 RFCs into 1 circuit incorrectly then He / She needs to hang up their screwdrivers, and take up another Trade.
Thanks for the advice it is much appreciated👍
 
Pete999

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I'm not saying it's correct just saying what I've seen. That's why I've asked the question to make sure its correct.
Well no then it isn't
Post automatically merged:

I'm not saying it's correct just saying what I've seen. That's why I've asked the question to make sure its correct.
Post automatically merged:


Thanks for the advice it is much appreciated👍
You are more than welcome Mate
Post automatically merged:

I'm not saying it's correct just saying what I've seen. That's why I've asked the question to make sure its correct.
Post automatically merged:


Thanks for the advice it is much appreciated👍
See description of a circuit in OSG or BS 7671
 
Mark Wright

Mark Wright

You could put more than one radial on a MCB but its not good practice.
2 Rings on 32mcb is dangerous are you sure it's not 2 radials?

2 rings would have four wires goinging into a MCB

Some people spur off a MCB maybe it was that - 3 wires?
 
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