final

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  1. J

    Wagos on Final Ring Circuits

    In a ring if there is a 30A screw terminal junction box in the ring one spur can be taken off this. The j box terminals have three cables in them. Each cable in a Wago (or an in-Sure) has it own connection slot for each wire. This makes a difference. Wagos are mini bus bars. If a 32A four...
  2. S

    Final vat return

    As above,have deregistered for vat(I was in cash accounting scheme) and am filling in final return,end date 13/11/20. It seems,I have to account for vat on sales invoices unpaid on 13/11.Do I enter the entire invoice details or just the vat content for the final payment?Also for inputs,can I...
  3. T

    4mm ring final circuit

    Evening all Pricing a bungalow that has 300mm insulation in the roof, as im going to be wiring around the corenrs as much as i can and through the middle would you use 4mm on the ring final circuits? I want to use 2.5mm radials for bedrooms and living room but my boss is old school and wants...
  4. V

    Ring Final Test - Neutral >19.99kOhms

    Just checking, what I think I already believe. Doing a pre-install test of some outdoor sockets on a ring final. So far, confirmed bonding, incoming polarity, Ze and Pfc and RCD Test on circuit, everything fine and within regs. However on testing Ring Final, Line came out fine (0.7), Neutral...
  5. J

    Coding for a Ring Final Circuit 1.5/1mm

    Afternoon all, A quick EICR question. I have found a Ring Final Circuit that has been run in 1.5/1mm twin and earth. It is RCD protected and OCPD is a 16a type B MCB. All testing has come back as expected for a Ring final that has been installed in 1.5/1mm and the measured Zs is well within max...
  6. mak

    Insulation resistance test on a ring final circuit

    Might be trivial question. My understanding is that we test on either leg of the ring since both legs make up a radial, but some say they test both legs at once, i.e. LL to NN, it would make sense if the other leg is not insulated since this is a live test, but I don't see why not if the other...
    • mak
    • Thread
    • circuit final insulation insulation resistance insulation resistance test resistance ring ring final test
    • Replies: 30
    • Forum: UK Electrical Forum
  7. E

    UK CPC missing on ring final

    Morning All, Currently carrying out an EICR and going through ring final steps with the following readings: r1: 0.31ohm rn: 0.32ohm r2: 0.03ohm Started taking sockets faces off to find that there is no cpc, only fly lead to metal patress box and steel conduit trunking. (See photo) When i...
  8. C

    Fault finding ring final RCBO

    Done a condition report on a old mains board, everything good apart from ring final, got 0.55 nn 33.7ll and 3.8 on ee, changed board to main switch and rcbos, carried out a full accessory swap on all sockets and fuse spares in house, found some bad practice, twisted lives, n and earth's, no...
  9. W

    7 core NYYJ cable to extend ring final circuit?

    Hi, Extending a ring final circuit off a socket in the kitchen through the wall into the shed on the other side. I already have 7 core NYYJ 2.5mm cable and I was wondering if I could use that to go through the wall to a J/B then connect to singles in conduit which would add about 4 meters in...
  10. J

    Diversity on a Ring Final

    Hi there, I'm just trying to get myself into cable calc and my first hurdle is demand and diversity. I understand the majority of what is coming across in tables A1 and A2 OSG but I'm just struggling to clearly understand what I should be using for demand on a domestic 32amp ring final...
  11. M

    Ring final no continuity on live ends r1

    Hi, Im new to fault finding, Im on a job where there is no live to live continuity on the ring final circuit which supplys the sockets to the whole house, with new flooring recently installed I cant access the floors, im assuming there are many jbs because its a 1960s property, if I connect one...
  12. samsingh

    UK Am2 - Ring final circuit

    Hi, I've sat my am2 practical today. I have a question about the ring final circuit hopefully there is someone who can relate. Is it crucial to wire the ring final a certain way? Ive bought 2 legs out, one goes into my closest socket which went down a bit of conduit and the other leg goes to...
  13. P

    UK Extending/breaking into ring final circuit

    I need to install some extra sockets in a kitchen. It's a single story ex-commercial kitchen. All the wiring is in singles in steel trunking in the loft space, with drops through steel conduit to the various sockets and switches. I want to install an additional 6 sockets under the worktop for...
  14. marconi

    MARCONI'S FINAL RING CIRCUIT LIVE CONDUCTOR BREAK DETECTOR IDEA

    Over the last few days I have been stuck indoors because of the rainy weather. To pass the time I cobbled together my simple idea for a FRC live conductor break detector, ie break in L or N. I also have a working demonstrator for detecting a break in the cpc but I will/may post that another...
  15. Sparksaflyin

    Dual board with no earth on final circuits

    Hi guys. Need to change the fuseboard at my parents house but none of their final circuits have a cpc run to them. Obviously have an earth on the main incoming so I can get a 16mm earthing conductor up to my new 18th edition metallic consumer unit but they don’t want a rewire so none of the...
  16. R

    Extending ring final circuits

    Hi. I have a CU move to do - around 5m from current location. There are 10 circuits, 4 of them ring finals. I'm considering whether to extend the rings 'as are', or to split the rings somewhere in their approximate middles and extend them to separate RCBOs as radials, the aim being to reduce...
  17. D

    Radial final circuit

    Hi guys, just started rewiring my house, and noticed the sockets in the attic wired in radial instead of ring. Can I leave it in radial? There are only 2 sockets up there, unlikely there will ever be much load on it. I was thinking of wiring it 2,5mm2, (as it is now) on a 16A beaker. Any...
  18. S

    Supply and final circuits for stables.

    Hi all, just looking for advice prior to a potential upcoming project supply stables for horses. The supply characteristics into the main house is TNCS and the stables are located approx 40m away from the building. I am thinking of putting a 1w non-rcd protected consumer unit at supply end...
  19. P

    Radial or Ring Final Issues

    Hi all I have just moved in and am in the process of adding some sockets. Am I right in saying that I can add to the circuit regardless of which type of circuit it is as the MCB is a 20a, obviously as long as I'm using 2.5mm t+e not speaker wire etc. I get the issues with RFC where 32a fuse...
  20. Marcus Vaughan

    Shaver Socket from a Ring Final

    Hi All, A customer has asked for a shaver socket to be installed in his bathroom. The only issue is that there is no lighting circuit available (loft conversion above and no access to the eaves). His idea was to come off a socket in a bedroom on the other side of a stud wall to the proposed...

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