final

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  1. C

    why would i get 0.00 on Ring Final for R1+RN?

    Hi so i am doing a test on sockets on a ring Final circuit for family member. Got my end to ends r1 0.62, rn 0.64, r2 0.97, identified opposite r1's+rn's for figure of 8 joined in connector blocks. set up Kewtech KT63 multifunction tester nulled leads and plug adapter and tested at sockets at...
  2. N

    Swapping out 2 gang for 2 FCU on 32A radial final

    Hello everyone, Back again after receiving great advice for the bathroom a few months back. This time I'm making a mess in the kitchen. We have a 32A MCB to radial final which goes to a cooker control switch which also has an integrated 1 gang socket. Off of this is a double socket which...
  3. J

    Ring Final Circuit - spurs only

    I read that it is against the regs that a ring final circuit cannot be just a ring with with spurs off it. In short, a ring must have sockets on it which double up as junctions. I find that hard to believe.
  4. K

    under floor heating 32amp final ring advice needed

    Hi all looking for some advice as a non sparky , be gentle :) To be clear I wont be doing the work myself , just want to be better informed. I already had an underfloor heating mat rated at 6.8A installed in my kitchen , this worked off a fused spur (13A) on the kitchens 32amp Ring final...
  5. J

    Explain the process of Designing a Final circuit

    I have been given this assignment "the drawing below shows the floor plan of a small factory with the electrical symbols. Explain the process of designing the final electrical circuit that supplies all the elements 6 . The total length of the circuit is 25m. Any assumptions you have to make...
  6. C

    MCCB used as a final circuit supply

    Currently pricing a 250a Power upgrade for a small warehouse, the new 6 way 250a MCCB panel will essentially be used to supply x2 fuseboards however i want to have the MCCB panel also supply the larger plant as i want the MCCB panel to take the heavy loads as the client said he will never be...
  7. S

    Ring Final discussion

    Hi all, I had a fault on site today I've not encountered before. if anyone could shed some light on a similar fault they may have encountered before that would be helpful. I was changing some damaged socket fronts over and I noticed the cables had signs of over heating so I thought I would do a...
  8. D

    EICR code for hybrid final ring cir

    Hi all new to form so thought I would as a question. Testing a final ring circuit & all is normal apart from the live / brown legs of the circuit which are too short to reach the MCB so they have connected them together in a block & extended it within the CU via a 6mm to the MCB Just wondering...
  9. W

    Wiring of ring final circuit

    Always ask fellow sparks this and always get different answers, what do you feel the quickest way of wiring a ring in say a flat for example. Do you piggy back it round getting your 2 legs into each room before dealing with the wiring of the sockets in each room. Or do you just wire to each...
  10. T

    Ring final routing in loft conversion

    Good evening All. Maintenance electrician here moving into domestic installations. What I'm still struggling with is the ring finals routing, especially in loft conversions. I am wiring one at the moment. Can you please have a look at the diagram below. Apologies it's very basic and rooms are...
  11. T

    Running ring final cables in loft eaves

    Hi All. I am wiring a loft conversion and want to avoid covering cables in the insulation. I can clip the cables to the studs on the other side of the wall in the zone parallel to the socket outlets. Is this sensible thing to do or would you rather run in the holes through the joists and apply...
  12. V

    Have come across a 16A Ring Final

    I've not come across this before. The current regs state it should be on a 32A MCB. I've been asked to re-wire a bedroom which will involve extending this ring. It already serves two other bedrooms and the lounge. I know I probably should tell the client to upgrade this MCB to 32A, but is it...
  13. J

    UK Find a Fault on a Ring Final Circuit

    I am not a qualified electrician, I was employed as an electrician after my MoD electronics apprenticeship but that was 30 odd years ago. So I have basic skills and an insulation tester with a low resistance capability. This is an old installation with a new cu installed in 2014 (EICR etc...
  14. N

    When working on circuits do you isolate whole board or just the final circuits using MCBs ?

    When working on circuits do you isolate whole board or just the final circuits using MCBs ? Or is there any instances when the whole board has to be isolated even if you are working on few final circuits? Thanks.
  15. M

    C&G Level 3 Project Question (Cafe ring final sockets length)

    Hi guys I'm a bit frazzled by the wording on the main project. So, we are told to keep the max circuit length down to 30m, tutors said that isnt physically possible so just try to keep it under 40m and they noted that the socket circuit was a bit of a mental one and that the 30m guidance set...
  16. I

    Ring final circuit Zs.

    Can you get the zs by using a earth loop impedance tester. I was taught if there's 2 rings circuits, you can do r1,r2, rn /4 on 1 On the other ring you can plug in the earth loop impedance tester and measure the zs. If you do it that way you must write in the observations you measured. Have I...
  17. V

    CPC low R2 continuity reading ring final

    Hi, I've just been testing a ring final before installing an outdoor socket and I got an R1 and rn of 0.6, but instead of 1.01 for R2 I got a range of readings from 0.1 to 0.51 and it wouldn't settle down, so I couldn't continue the tests. I know parallel paths could cause a low reading, but...
  18. I

    MCP final exit location

    Hi all, Any advice on where to locate a manual call point in a commercial premises (shop) if there is nowhere either side of the entrance or close to where one can be positioned - or what have others done in the past? Thanks.
  19. R

    Extension of ring final circuit

    Hi there all, I have a property and I have noticed the following wiring (please see below) in one of the rooms in the house. It looks like the ring circuit has been extended. A single 2.5mm Twin + Earth cable (in red) is providing power from the consumer unit which feeds a chain of electrical...
  20. timhoward

    Insulation resistance difference both ends of ring final cct

    Initial fault was RCD tripping, narrowed down to a ring final cct. IR tests on that cct with all loads removed were showing almost zero between neutral and cpc. So I broke the ring apart and eventually found the nail through a cable, and got that all sorted. Now its testing ok in as much as...

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