More than one circuit on a breaker; what code, plz!

[morph]

Because that's how they were designed in the first place, they only become one circuit when they are placed into the common breaker.

would you list them as two circuits ? or one circuit with the most pessimistic value recorded

just asking out of interest not interested in entering the debate that is evolving
personaly i see it as a spur from a RFC and as such i would test as one circuit dead and live

 

[morph]

Just for clarification, someone spurred off from the RFC at the breaker to install a socket in the kitchen (under the kitchen units) to feed the boiler, the pictures show the cable route. Cheers!

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then its one circuit with no code IMO

 

[GaryM]

personaly i see it as a spur from a RFC and as such i would test as one circuit dead and live

Agreed.

 

[GLENNSPARK]

Just for clarification, someone spurred off from the RFC at the breaker to install a socket in the kitchen (under the kitchen units) to feed the boiler, the pictures show the cable route. Cheers!

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hmm....mutual detremental influances..lol.......

 

[topquark]

would you list them as two circuits ? or one circuit with the most pessimistic value recorded

just asking out of interest not interested in entering the debate that is evolving
personaly i see it as a spur from a RFC and as such i would test as one circuit dead and live

IF (big IF) you were certifying it as such then you would list it as one circuit. As GaryM correctly points out that's what it is. The point I was trying to make (poorly it seems) is that it only becomes one circuit when connected at the breaker. It should still be dead tested individually as designed IMHO. Next question will be about recording R1+R2 I'm guessing

 

[topquark]

Just for clarification, someone spurred off from the RFC at the breaker to install a socket in the kitchen (under the kitchen units) to feed the boiler, the pictures show the cable route. Cheers!

View attachment 9013 View attachment 9014
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Then the cable is undersized for the spur and in danger of catching fire!

 

[GaryM]

so if extranious conductive parts in the bathroom for instance (pipework) are not given supplementary bonding in an installation being fed from a non RCD protected board thats not a 2 is it? and does the board feeding it not require improvement?...or at least put an RCD connection unit to feed the bathroom circuit/s....then the board becomes a 4.....

I disagree that you apply a specific code to the consumer unit based on circuit defects.
If circuits 1, 2, 3 and 4 lack RCD protection then that's what you note, not that the consumer unit lacks an RCD.

 

[morph]

well theoreticaly there could be two R1&R2
if two radials left a CB and were of the same lenght " whistles "
LOL
the reality is i would list as one circuit no code and would never of dreamt of asking on a forum LOL and i would nt loose any sleep or hair over it

 

[GaryM]

Then the cable is undersized for the spur and in danger of catching fire!

I can't quite make the picture out, does the 2.5mm spur supply just one single socket?

 

[topquark]

I can't quite make the picture out, does the 2.5mm spur supply just one single socket?

It doesn't matter mate the 32A MCB is protecting the one 2.5mm cable (the cable is not adequately protected).

 

[GaryM]

No difference with the spur originating at the origin or socket 6. Still the same 32A protective device and no problem.
think about the 13A fuse in the plug top, there's your overload protection for the spur.

 

[morph]

Hard to see from the photo but it seems fine to me its a spur with 2.5 mm cable

 

[topquark]

No difference with the spur originating at the origin or socket 6. Still the same 32A protective device and no problem.
think about the 13A fuse in the plug top, there's your overload protection for the spur.

13A+13A = 26A, assuming it's a double socket.

 

[GaryM]

Same scenario no matter where the spur originates from.

 

[morph]

the cable is just lashed on the floor lol so method C

= 27 A