ring main | Page 5

ring main

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  1. diyterry

    Lighting circuit from ring main

    I expect it's a big no no but is it permissable to create a new lighting circuit ( just for one light ) from a spur off a ring main?
  2. D

    Identifying ring main cables without a socket

    Hi, to give you a quick break down of my situation. I have a converted bungalow that has several generations of wiring and I'm currently trying to add an additional socket (via a junction box) to be located in a loft onto a ring main. Thankfully in my loft I have plenty of 2.5mm twin and earth...
  3. P

    Strange earth reading on ring main

    Hi guys. I have just tested a ring main. The readings end yo end on the 3 conductors were all fine. When I cross connected the live to neutral and tested around the sockets all of the readings were correct ie R1 + rn÷4. But when I tested with live earth cross conceded the readings got higher...
  4. Buners

    1 ring main for whole house

    Upstairs & downstairs on the same breaker, RCD protected board. Views on this?
  5. P

    Install method 101 or 103 for a ring main

    hi I would like clarification on the following: 101 shows a cable clipped to a ceiling joist and then covered with 100mm of insulation ( from memory). 103 shows a cable fully surrounded by insulation in a stud wall. If I have a cable clipped to a stud in a wall which is insulated with sound...
  6. Norfolk Enchance

    Adding more sockets to ring main

    Hi Everyone, I'm thinking of adding 4 double sockets to a ring question is can i use a 30mA RCD of one of the existing sockets then add my other 4 from the RCD ?
  7. R

    2.5mm ring main and Celotex Insulation

    I am building a garden office and currently have 25mm Celotex in the walls. I am running the ring main around and then want to add some more Celotex. My question is how much of an air gap do I need to leave for the ring main?
  8. D

    ring main mcb & main rcd tripping

    Problem as above - is a disconnected earth wire in a socket sufficient to cause this? If so, I would like a brief explanation of the safety mechanism involved.
  9. B

    no supply on part of ring main

    I have suddenly lost supply in all of the sockets in one of my bedrooms yet all of the other rooms on that ring main are OK. I've no idea what happened because it was only discovered when I tried to switch on a bedside lamp. Ceiling lights work OK. No main fuses were tripped and I've tried...
  10. A

    Diversity Calculation In Offices And Workshop

    Hi i'm currently doing some course work and have no access to the On site guide. Does anyone happen to know the diversity for, lighting, ring mains, Welding equipment, TP-N equipment and a car ramps. The building is an Office building and a workshop, Thanks.
  11. A

    Diversity in Offices and workshop

    Hi i'm currently doing some course work and have no access to the On site guide. Does anyone happen to know the diversity for, lighting, ring mains, Welding equipment, TP-N equipment and a car ramps. The building is an Office building and a workshop, Thanks.
  12. J

    Downstairs socket from upstairs ring main cable drop in cavity wall

    Hi everybody, I'm having a hard time trying to find the best way to install cables from the upstairs ring main to a downstairs socket which is already in place, I just need to change the cables for new as adding sockets upstairs. The wall structure is plasterboard then space then insulation then...
  13. A

    New socket on ring main - replace consumer unit?

    I currently have a double socket in our spare bedroom and a 4 way extension block running a computer and peripherals. For neatness I would like to have an electrician add a second double socket right next to the existing one and do away with the extension block. The socket can be added to the...
  14. michaelw6

    Ring main with no earth ring!?!

    Today i did a board change was one of them all in one eicr fix on site board changes "you know the ones that always go wrong". Well the issue was the house ring. i had 0.44 live 0.44 neutral and no earth ring. I have put this circuit on a B32 61009 RCBO. now how do i stand with the earth as its...
  15. P

    Ring main tripped struggling to find cause

    32amp ring main tripped mcb and rcd overnight. Rcd will reset but not all the time, mcb will not reset. Unplugged everything in house and mcb still trips, but rcd ok now. 32amp ring main covers whole house and struggling to locate fault. I'm newly qualified and probably missing something obvious...
  16. P

    Heating on ring main against regs?

    Had a call from a landlord today they said they had had a new boiler fitted and the installer said the heating was taken off the ring main and was against regulations. Maybe not ideal but can't see as it is against regs.Anyone know if it's a oil or gas regulation. Cheers
  17. captaincaveman

    Ring Main Tripping Rcd And Connected With Main Earth

    Hi you beautiful people. Just been looking at a rather confusing and disgusting job in a two floor ex-council house and wondering if anyone could give me any ideas (apart from walking away from it). The ring has been tripping the RCD (main switch) Live and Neutral have both failed IR test to...
  18. B

    Cooker Advice ? Ring main or dedicated circuit ?

    Hi All My trusty old SMEG fan oven has finally died and i have been offered a replacemnt, brand new, never fitted at a good price. My current oven just has one rting - 3Kw (it has top/bottom/fan elements) and is just fed off a 13a plug of the main circuit (for about 12 years when i had new...
  19. F

    Ring Main resistances

    Is there a maximum r1 rn and r2 value for a ring main ? I no the maximum ZS is 1.10ohms for a 32amp type B curve breaker but is there anything in regs for the end to end resistance of the ring ?
  20. U

    How to extend ring main and where to channel cable (Domestic property)

    Hi all, My daughter has asked me to put in a new socket for her. She would like it putting about 10ft from an existing double socket on the same wall. The floor is concrete and her upstairs has just been decorated (carpets etc) so I searched to see if it was acceptable to run mains cable behind...

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