ring

Recent contents Top users
  1. J

    UK Kitchen Wiring-New Build ring vs radial

    HI All, I am building a new house (self build) and have my part P so am running the cabling. My reading of the regs says that any appliance of over 2KW should not be supplied by a ring main and should have a 4mm radial. (BS 1363) My questions are really around this- - It seems all of my...
  2. S

    Contactor wiring, break ring circuit through a stop button

    Hi guys , I have to break a ring circuit through a contactor with an emergency stop button .. just want to double check my wiring in the diagram is correct .. haven’t done much of this sort of work so any feedback is appreciated.
  3. S

    Help with Ring Tabulated Current Equation

    Hi there I am struggling with the following calculation. 4mm Ring Final Circuit, In = 32A Cg - group of 6 with a correction factor of 0.57 Ci - 50mm insulation of 0.78 It = In/CgCi It = 32/0.57x0.78 It = 71.97A Then I get stuck here: Ib < In < It < Iz 4mm Cable from Table 4E2A gives Iz of...
  4. S

    Ring main questions.

    Hi all, I’ve had some good advice here in the last week or so which has made me ask a few more questions. 1. Ring main uses the old Red and Black PVC cables, is it okay to add on to a ring main with newer cable ? 2. Is it the norm? to use Wago’s to split a ring main and extend ? 3. My sockets...
  5. P

    Ring Final Circuit (RFC) versus Radial. Yes, again.

    This is a topic that comes up a lot and seems to attract near-religious levels of fever in how folks argue over the choice of circuit for UK sockets. However, often the arguments are ill-informed or they veer off in to pointless corners, or sometimes get personal. This is my attempt to put a lot...
  6. CopiamElectrical

    Ring circuit fault, High RN

    Hey there, Sorry I’ve just joined up. I’m a qualified electrician/Electrical engineer. Recently sat my 2391-52. My question is I had a fault which I couldn’t find or rectify during a periodic test that I carried out yesterday (tenant property) occupied. Circuit: Ground Floor Socket 32A...
  7. B

    Have the rules for ring mains changed over the years?

    I am sure when I qualified for the 16 edition we spoke about how to treat a ring main. I know the majority of the time we just learned how to read the book and how to find needed headings but I am sure we also spoke about ring mains. If a socket has two cables coming into the back box then it is...
  8. J

    3rd ring from garage

    I have supply in the garage with its own small consumer unit with a 63a breaker and 1 B6 and 1 B16 breakers. The garage has a ring of sockets coming from the B16 breaker. An electrician has added a wire into the 16amp breaker to a second shed. So that is 2 rings from one B16 breaker. I now have...
  9. S

    Loading on an existing Kitchen and living room 32amp ring final

    Bit of advise if anyone has time.. I have a customer who brought a new kitchen from wrens. Customer has had the route to the kitsch redecorated 6months ago. I’ve found a route which means 25meter going externally and I quoted to supply new 6mm and ring circuit. They are supplying Oven (13amp...
  10. G

    From concealed ring to surface fixed

    Hi all, question on extending an existing ring main onto the surface and then re-joining back to in-wall. Is there a ‘correct way’ to do this, as I don’t see any sockets other than spurs with flex outlets that allow you to nicely exit a double, continue surface mount for a few sockets (behind...
  11. B

    Spur off ring breaker

    Hi, looking for some advice on what I have seen at my mums house when I took the cover off the consumer unit. 32A breaker, labelled kitchen socket ring, 3 wires coming out of it. All look like 2.5mm2, two of them are same shade of brown so I suspect they will be the ring, and another to an...
  12. D

    LV fault tripping HV ring main unit

    Hi all, I have been on a site repairing damage caused by travellers collecting copper for the last week. We have found and replaced cabling to get the site up and running. Power has been on for a few days but today the 11KV ring main unit tripped. This feeds a transformer attached to the main...
  13. C

    Can I spur a socket from an existing fused spur on a ring main?

    I'm sure this has been asked before, but I just want to confirm: Currently I have a spur leaving a socket in the bedroom, into a 13A Switched FCU and running up to power a double socket in the loft. I now want to locate a socket in the old boiler cupboard/airing cupboard to power a tumble...
  14. L

    Wiring Ring that has already been bypassed

    Hi folks, cautious DIYer, so just looking to confirm something. I got a wired Ring for our neighbors who have been without a doorbell at all. Seems the previous owners had had some sort of smart doorbell system and took it with them. When I got to the part with the chime box it looks like...
  15. ChrizK

    Electrial Rf interference, theory and practice of using Ferrite Ring Cores 'choke'

    I appreciate that @mark641 asked how ferrite cores work here, answered by @Lucien Nunes , but TBH, it is at a deeper level than I need. My question is more so in regard to the practical use of them. I (unfortunately) bought a Road Angel Halo Pro dashcam ...I bet you can already guess the...
  16. mrkent

    UK Adding an additional light to an existing electrical ring circuit

    I have a working circuit setup connecting the CU to a switch and light. I want to add an additional light to this circuit, do it use the Brown or Black as live. See images attached of existing termination and loop.
    • mrkent
    • Thread
    • adding additional circuit electrical existing light ring ring circuit
    • Replies: 6
    • Forum: UK Electrical Forum
  17. J

    How would you meter (kwh) a ring final

    I have a customer that requested kwh meters on the socket circuits of an office lock he rents out,(rooms are rented separately). There are two 16amp radials which obviously are not an issue, But the ring mains 4 of are causing me a headache for obvious reasons! The question is how would you guys...
  18. M

    Volt drop calculation on spurs off of a ring.

    Hello, New trainee electrician so sorry if this is a dumb question I feel confident with calculating the volt drop for a ring and radial circuit but am getting confused when in comes to incorporating a spur and and just wanted some help to confirm if I am calculating the volt drop at a fuse...
  19. I

    Cable Calculations on Ring Circuit

    Hello, I am a trainee electrician just starting to get into doing cable calculations. I understand them when it comes to a radial circuit but get lost when it comes to ring circuits. If I take my Ib and In as being 32A for example how would I go about selecting a cable size and proving it is...
  20. P

    New member seeking advice on spurs ring mains

    Hi, I'm new to the site and wanted to seek some advice thanks, relating to adding fused spurs to existing ring mains in a commercial premises. Some of my other colleagues have been asked to explore ring main alterations, but they look after some site based kit and this is more related to...
Best EV Chargers
Best EV Chargers by Electrical2Go! The official electric vehicle charger supplier.

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Advert

YOUR Unread Posts

Daily, weekly or monthly email

Receive a daily, weekly, or monthly email containing a digest of new and recently updated threads.

Advert

TrueNAS JBOD Storage Server

UK Tiling Forum | Tilers Forums
UK Tiling Forum by Tilers Forums UK
Plumbers Forums | Plumbing Advice | Gas Forum
Electrician Tips from Professional Electricians
JBOD Forums: a forum for JBOD storage server advice
JBOD Suppliers: JBOD Storage Server Supplies
Back
Top