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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Ring Main Extension - Done Incorrectly ?
We have just moved into a new 1960s house and the upstairs ring main
has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. |
#2
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Ring Main Extension - Done Incorrectly ?
On Dec 13, 12:40 pm, wrote:
We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. If's it's a double socket individually wired then it sounds fine to me. |
#3
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Ring Main Extension - Done Incorrectly ?
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#4
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Ring Main Extension - Done Incorrectly ?
On Thu, 13 Dec 2007 05:03:34 -0800 (PST), adder1969
wrote: On Dec 13, 12:40 pm, wrote: We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. If's it's a double socket individually wired then it sounds fine to me. How do you mean ,individually wired ? It's part of a ring and another ring has been added to that socket with who knows how many sockets on it . Thats not the way to extend a ring afaik . |
#5
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Ring Main Extension - Done Incorrectly ?
On Dec 13, 12:40 pm, wrote:
We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. Are all four cables terminated directly into the back of the socket (four wires into each terminal)? If so then that is indeed incorrect. One of the original pair of wires should be joined using crimps to one of the new pairs of wires. The remaining old and new pairs should then be terminated into the back of the socket. Steve |
#6
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Ring Main Extension - Done Incorrectly ?
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#7
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Ring Main Extension - Done Incorrectly ?
On Dec 13, 1:15 pm, Stuart B wrote:
On Thu, 13 Dec 2007 05:03:34 -0800 (PST),adder1969 wrote: On Dec 13, 12:40 pm, wrote: We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. If's it's a double socket individually wired then it sounds fine to me. How do you mean ,individually wired ? It's part of a ring and another ring has been added to that socket with who knows how many sockets on it . Thats not the way to extend a ring afaik . If one side of the old ring and one side of the new ring are joined together in one socket, and the other sides of both rings are joined in the other socket then it remains a ring. If however they're all jammed into one connection then it's more of a spur but then i don't see the need for the two runs up to the loft. |
#8
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Ring Main Extension - Done Incorrectly ?
On Thu, 13 Dec 2007 07:05:58 -0800 (PST), adder1969
wrote: On Dec 13, 1:15 pm, Stuart B wrote: On Thu, 13 Dec 2007 05:03:34 -0800 (PST),adder1969 wrote: On Dec 13, 12:40 pm, wrote: We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. If's it's a double socket individually wired then it sounds fine to me. How do you mean ,individually wired ? It's part of a ring and another ring has been added to that socket with who knows how many sockets on it . Thats not the way to extend a ring afaik . If one side of the old ring and one side of the new ring are joined together in one socket, and the other sides of both rings are joined in the other socket then it remains a ring. If however they're all jammed into one connection then it's more of a spur but then i don't see the need for the two runs up to the loft. But that is NOT what the OP aid .He says "We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached." re-read that last sentence |
#9
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Ring Main Extension - Done Incorrectly ?
Stuart B wrote:
2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached." re-read that last sentence Much depends on how they are attached and to what. All to the set of terminals on the socket, not good. To a combination of the socket and a chockie block, might be ok. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#10
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Ring Main Extension - Done Incorrectly ?
On 13 Dec, 13:03, adder1969 wrote:
On Dec 13, 12:40 pm, wrote: We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. If's it's a double socket individually wired then it sounds fine to me. Certainly to me the description sounds as if this is a spur that has been set up as a ring off a ring - ie a 'ring' spur ! ! The OP talks of 4 wires going into the socket : So in the back of my socket I have 4 pairs of wires attached. Nowhere does the description make me think that the 'primary' ring has been opened up and the additional wiring included within this ring. Firstly this is not acceptable, if for nothing else that it could cause a severe misbalance in the 'primary' ring at this point. A spur is just that - a single branch cable off the ring. The OP needs to either convert this just to a spur with one socket on it - ie a radial - or incorporate this loop properly within the ring feeding his bedroom area. I will leave it to those who are more up to date than I to state the regulations on how that can be done ! Rob |
#11
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Ring Main Extension - Done Incorrectly ?
In article
, wrote: We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Remove the socket. Couple one end of the original ring to the extension upstairs using a suitable choc block. The other two cables to the socket. You now have a normal ring. -- *Upon the advice of my attorney, my shirt bears no message at this time Dave Plowman London SW To e-mail, change noise into sound. |
#12
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Ring Main Extension - Done Incorrectly ?
On Thu, 13 Dec 2007 04:40:28 -0800, andy.hide wrote:
We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. If two of the pairs of wires (int the socket) are nicely joined with a proper crimping tool. If all the earths are properly sleeved and joined If the back box has (a) grommet(s) fitted for the new cable exit(s). If the resulting new ring is still compliant for total cable length (for the given fuse or MCB) and for expected loading and for the served floor area. Then it's probably OK. -- Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at http://www.diyfaq.org.uk Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html |
#13
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Ring Main Extension - Done Incorrectly ?
On Thu, 13 Dec 2007 18:20:38 +0000 (UTC), Ed Sirett
wrote: On Thu, 13 Dec 2007 04:40:28 -0800, andy.hide wrote: We have just moved into a new 1960s house and the upstairs ring main has been extended into the loft by drilling a hole through the wall of the back of a socket in one of the bedrooms into the airing cupboard. 2 X 2.5mm T+E then loops round the loft and back to the socket. So.. in the back of my socket I have 4 pairs of wires attached. This to me seems wrong. I would have added a junction box in the airing cupboard and then run one of the existing wires to that. I would then loop from there round the loft and back to the socket. Can anyone confirm if the way it's been done is acceptable. I would have thought that this setup would mean an imbalance in the current travelling round the ring. Cheers. If two of the pairs of wires (int the socket) are nicely joined with a proper crimping tool. If all the earths are properly sleeved and joined If the back box has (a) grommet(s) fitted for the new cable exit(s). If the resulting new ring is still compliant for total cable length (for the given fuse or MCB) and for expected loading and for the served floor area. Then it's probably OK. Must have been tricky getting 4 x 2.5mm cable in to the socket connectors |
#14
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Ring Main Extension - Done Incorrectly ?
In article ,
Ed Sirett wrote: If two of the pairs of wires (int the socket) are nicely joined with a proper crimping tool. If all the earths are properly sleeved and joined If the back box has (a) grommet(s) fitted for the new cable exit(s). If the resulting new ring is still compliant for total cable length (for the given fuse or MCB) and for expected loading and for the served floor area. Then it's probably OK. There's no need to crimp if the connection is inside the backing box - a choc block will be fine as it's accessible. Might be tight if it's a shallow box, though. -- *Work is for people who don't know how to fish. Dave Plowman London SW To e-mail, change noise into sound. |
#15
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Ring Main Extension - Done Incorrectly ?
Dave Plowman (News) wrote:
In article , Ed Sirett wrote: If two of the pairs of wires (int the socket) are nicely joined with a proper crimping tool. If all the earths are properly sleeved and joined If the back box has (a) grommet(s) fitted for the new cable exit(s). If the resulting new ring is still compliant for total cable length (for the given fuse or MCB) and for expected loading and for the served floor area. Then it's probably OK. There's no need to crimp if the connection is inside the backing box - a choc block will be fine as it's accessible. Might be tight if it's a shallow box, though. One of the backboxes in my house (not put in by me...) has 5 sets of wires 2 for the original ring. 2 for the ring extension. 1 for the spur. All done tidily enough, though I scratched my head when I first saw it. Only found it because I replaced the CU and the resistances for Phase/Phase and Phase/Earth didn't add up - they'd married all the earths together, so the earth resistance was about half what it should have been for a straight ring. Ben |
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