I'll expect whoever did it just bunged in whatever he/she had on the van....
Spurs from breaking into ring main
- Thread starter 10monty
- Start date
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I suspect you're right.
So to clarify if on a 32a mcb and all sockets wired in 4mm there should be no problem running these appliances, at the same time if necessary (unlikely)
So to clarify if on a 32a mcb and all sockets wired in 4mm there should be no problem running these appliances, at the same time if necessary (unlikely)
DSConfused? Someone (I think bernard) has a picture of one.
... a pile of JB's (and nothing else) 'on the ring', with one socket 'spurred' from each JB. If all sockets have to be wired as 'drops', that approach can save a lot of cable, and a fair bit of Zs/VD.
Kind Regards, John
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J
jg321
Interesting. Kind of a "distribution circuit" type design. Twice as many connections worries me though, MF or not. I very much like as few joins as possible, especially hidden. In my house, I've even tended to put an extra socket in when extending a ring final, rather than a join under the floorboards.
Cheers,
Jon
I've seen it done a couple of times, in bungalows. No problems.
It does make adding more sockets a bit more difficult though.
Indeed, like others have reported, I have actually seen ring final circuits which had no sockets, just lots of spurs (from JBs) - and I would say that even that is actually compliant with regs (provided the JBs are 'accessible' or MF!).
Kind Regards, John[/QUOTE]
… a pile of JB's (and nothing else) 'on the ring', with one socket 'spurred' from each JB. If all sockets have to be wired as 'drops', that approach can save a lot of cable, and a fair bit of Zs/VD.
Kind Regards, John[/QUOTE]
Hence, my confusion
DS
Kind Regards, John[/QUOTE]
… a pile of JB's (and nothing else) 'on the ring', with one socket 'spurred' from each JB. If all sockets have to be wired as 'drops', that approach can save a lot of cable, and a fair bit of Zs/VD.
Kind Regards, John[/QUOTE]
Hence, my confusion
DS
OK, I see. I hadn't noticed the typo (ommission) - but I feel sure that you are intelligent enough to have known what I meant, particularly given the context in which my initial statement arose.Hence, my confusion
Kind Regards, John
That's obviously a valid theoretical point - although, unless/until I live for another 40+ years (which isn't going to happen!), I would personally probably be more 'worried' if they were MF !
As above, I can't argue with the theoretical concern. I do, however, wonder how common it actually is for problems to arise with undisturbed (usually hidden JBs). Like many/most others, I have lived with countless hidden, non-MF, JBs in my houses for decades, and have never had a problem - despite the 'awful state' they are often in (full of dead spiders and gunk) if/when one eventually sees them. I have certainly never personally experiences problems due to connections in JBs becoming loose.
I'd be interested to hear of others' experiences.
Kind Regards, John
Indeed.
And we should bear in mind that electrician's experiences are dramatically skewed by the fact that they only get called to look at things when a JB has gone bad. Nobody calls them out when they've had JBs there for decades and have never had problems.
And we should bear in mind that electrician's experiences are dramatically skewed by the fact that they only get called to look at things when a JB has gone bad. Nobody calls them out when they've had JBs there for decades and have never had problems.
J
jg321
Agreed - and my experience matches yours. I've actually got one under my bathroom floorboards (where the ring was broken into for a now removed security light) - which I intended to replace but haven't got around to it. I probably will do though before the new bathroom is finished (not yet started!).
I totally get that my "fewest joints" mentality is maybe a bit unnecesarry, and perhaps I do need to get over it a little. I did actually put an MF JB under my floorboards as the boss didn't want a socket on the other end of the wall, despite my "you can never have too many sockets" protest! I did however cut the cable such that one of the existing legs could fit into my new socket, so I only ended up with one join a bit further away from my new socket, rather than two very close together ones.
I totally get that my "fewest joints" mentality is maybe a bit unnecesarry, and perhaps I do need to get over it a little. I did actually put an MF JB under my floorboards as the boss didn't want a socket on the other end of the wall, despite my "you can never have too many sockets" protest! I did however cut the cable such that one of the existing legs could fit into my new socket, so I only ended up with one join a bit further away from my new socket, rather than two very close together ones.
"on the ring" (after "sockets").
If you look, my comment was in response to a suggestion that there was a regulation which said that one could not have more spurs than sockets on a ring final circuit. I was therefore saying that, not only does no such regulation exist, but I had seen ring finals with no sockets at all on the ring, only spurs.
Kind Regards, John
Indeed, but I'd nevertheless be interested to hear how often electricians are 'called out' because of such problems.
The odd thing is that one does quite often hear about problems having arisen because of 'loose connections' at sockets and switches (particularly shower isolators) etc., but not that I can recall in relation to JBs.
Kind Regards, John
Maybe because they fester away under floorboards and, when they fail, it's the fire brigade that gets called out?
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