Oven cable to Socket Cable
- Thread starter CrazyFool
- Start date
Yes, but only one from each socket,
You could of course extend the ring - again using two cables where one would have done.
A 4mm² radial would have allowed unlimited extension in any configuration.
You could of course extend the ring - again using two cables where one would have done.
A 4mm² radial would have allowed unlimited extension in any configuration.
There could be a problem getting four 2.5mm² conductors into a socket's terminal but, as often discussed, there is otherwise no inherent problem with taking two spurs from the same socket on a ring.
Well, with the above caveat about terminal capacity (and a bit 'worse' {than with a 2.5mm² ring} with at least some 4mm² conductors involved).
Other than at the last socket, the sockets on a radial circuit have two cables to start with, so that a single 'spur'/branch adds a third. Any configuration which involved more than one spur/branch from a particular socket would therefore again require at least 4 cables (i.e. 4 conductors per terminal) - and given that at least two of them would be 4mm², that would be stretching the terminal capacity even more than with a 2.5mm² ring.
Kind Regards, John
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Or extended with 4 milli.
... or, by doing what he's done and creating a 'pointless' 2.5mm² ring. As I've written to EFLI, in some senses 'pointless' if one has 4mm² cable to hand, but (if one doesn't) it does allow the use of a 30/32A OPD with 2.5mm² cable and, furthermore, if one is contemplating branches/spurs in the circuit ('now', or in the future), then one will get the number of required conductors into terminals more easily (if at all!) if none of them is 4mm²!
Kind Regards, John
Yes, and if his only screwdriver is broken...
I think that's a fairly sweeping statement - some people seem to 'have a problem' even putting three 2.5mm² conductors into a some sockets' terminals, and there certainly appears to be some variation between makes of socket as regards their terminal capacity.
In any event, my point remains that, when (as should be the case) one can get four 2.5mm² conductors into a terminal, it would not necessarily be 'easy' (or perhaps even possible) to get (2 x 4mm²) + (2 x 2.5mm²) (let alone 4 x 4mm²) ones in.
Kind Regards, John
Oh dear.
Why so?
Are you concerned because I have mentioned one issue which, if (for whatever reason) once want's a 'branched' circuit configuration, could mean that a 'pointless 2.5mm² ring' might offer some advantages (in addition to 'CPC redundancy') over a 4mm² radial?
Kind Regards, John
Well, as per the picture I think that the configuration is safe.
I think the terminal capacity of USB sockets is rather lacking, and they like to stick L & N next to each other so care is required.
Sometime I need to try and connect some large imperial cables into a couple, which I am avoiding at present!
I think the terminal capacity of USB sockets is rather lacking, and they like to stick L & N next to each other so care is required.
Sometime I need to try and connect some large imperial cables into a couple, which I am avoiding at present!
No. I just thought you were waffling unnecessarily.
Oh, I see - fair enough.
I just wanted to point out (for the benefit of anyone who didn't realise) that there might, in some circumstances, be some potential (practical) advantages in having an 'pointless' ring circuit.
Kind Regards, John
Then we should wire everything in rings - including the original cooker circuit.
No one considers "CPC redundancy" when installing circuits; nor do they have to.
There are several ways the electrician could have wired the two extra sockets - just using 2.5mm² where there wouldn't even be a need to change the MCB - but he didn't.
We don't know the distances involved but what he has done is, in my opinion, just silly, albeit satisfactory for use.
No one considers "CPC redundancy" when installing circuits; nor do they have to.
There are several ways the electrician could have wired the two extra sockets - just using 2.5mm² where there wouldn't even be a need to change the MCB - but he didn't.
We don't know the distances involved but what he has done is, in my opinion, just silly, albeit satisfactory for use.
Not really, and particularly not something designed as a cooker circuit. Don't forget that the points I raised related to the ability of BS1363 socket terminals to accommodate multiple conductors. The 'ring', per se, is not the issue - it's the difference between size of 2.5mm² and 4mm² conductors (and/or the capacity of BS1363 socket terminals) which is the issue.
They generally don't and, no, they don't 'need' to - which is why I only added that 'in passing', in addition to my primary point.
I am not in any way 'championing' ring finals, and would be hard-pressed to advocate their use. However, I tend to react when I see 'assertions', and hence when I see it being asserted that there is absolutely no 'point' in rings, I feel inclined to indicate that there are one or two 'positive' things which can be said about them
Kind Regards, John
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