final

  1. Peter Monfort

    Ring final circuit question

    When you do the continuity test on a ring final circuit and you have to connect L1 to N2 and vice versa, this assumes you know which L cable is the incoming or outgoing. I understand that if you connect L1 to N1 and vice versa the ohm readings rise then fall as you go round the ring circuit...
  2. B

    Can you calculate ring final conductors if you have a measured R1 + R2?

    Hello there everyone, I've dead tested some ring mains on a job recently but unfortunately I didn't do my measured end to ends. The circuits only have two spurs on each. I have my R1 + R2's, it was wired in 4mm T and E so the earth is obviously 1.5mm. For example, if one circuit measured...
  3. N

    Dead tests on a ring final prior to energising

    Testing using a socket tester at the sockets gives me unexpected readings, based on little r calcs, eg, outside allowed variance Using the probes on the terminals gives me 'Texbook' readings expected from a new install. Should I conclude the accessories are dodgy ? They are DP double gang...
  4. Lee Gold

    Ring final circuit help

    Hello can someone explain to me how a ring final circuit with 4 twin socket outlets work from the fuse board? I mean would you just have a line neutral and earth coming out the fuse board. Linking from sockets in radial back to the fuse board? Just want to know how it works what connections...
  5. D

    Final Ring Test during EICR

    Guys non domestic stuff here but is it true that you don't carry out ring final tests on EICR. Or is it that you don't have to and done do it as a matter of course anyway or do you charge extra for doing stuff not needed. I'm of the opinion of its not much extra to do it then I'll just do it...
    • Dizzy_Maskell
    • Thread
    • circuit don't during eicr final ring ring test test tests
    • Replies: 26
    • Forum: UK Electrical Forum
  6. M

    B type breakers with in line UPS

    Hi I'm hoping that someone can help. I am adapting some circuits which are supplied via an in line ups. At present, the ups supplies a 72 way db and the final circuits are supplied from the DB. This is a laboratory research environment and it is expensive (about £20k a time) when they...
  7. P

    Super League Grand Final

    Did any one else go? Is there any upset Wigan fans this morning lol. Any Rhinos fans with a stinking hangover :wacko: What a great game, one for the history books with Leeds winning all 3 competitions. All we have to do now is beat the Four Nations Champions New Zealand in a couple of weeks...
  8. L

    Volt drop question

    Hi I've got a question regarding volt drop. When calculating volt drop to a 3 phase distribution board do I use 230v (11.5v) or 400v (20v) The board I'm attempting to put a cable to is 75 meters away. Design current 100A From TABLE 4D4A Cable selected = 25 mm² For 25 mm²: mV/A/m 1.75 for 230v...
  9. 8

    Domestic: 20A DP switches and ring final circuits??

    Hi all :). Seeing alot of cases where I have seen 20A DP switches in a kitchen (for example) each feeding a radial 2.5t&e to each white goods appilance or similar, and the 20A DP switch primarys are fed from the 32A kitchen ring final circuits - Is this accepteble to BS7671? I'm guessing...
  10. M

    Dedicated ring final used to serve heating panels ?

    Afternoon, here's the proposed setup I am planning to supply 9 off 600w IR heating panels from a ring final circuit the installation is commercial and the panels will be fitted to a suspended ceiling a contractor and thermostat will control the heaters the circuit is fed from a 32a rcbo in...
  11. M

    Ring final end to end test

    As doing a cu change ,I have a ring final in a house with an end to end reading on r1-r2-Rn are so low that somewhere very close under a floorboard the ring must have been connected together somewhere, customer refused to pay more, so i have put in a 20amp mcb. To comply with current rating of a...
    • Maxstone89
    • Thread
    • final ring ring final test
    • Replies: 24
    • Forum: UK Electrical Forum
  12. Soulsurfer

    Ring final fault.

    Hi I have just looked at a friends place and she asked for a test on the CU as she thought it looked tatty ! It is, ran first ring o.k. Next ring seems to run zig zag fashion up & downstairs and to random outlets like a drunk wired it in ! Problem came when testing end to end I got r1 > 2000...
  13. happysteve

    Current carrying capacity of a ring final circuit - grouping factor?

    Eh up :) I'm trying to challenge myself with scenarios where I'm not sure if my interpretation of the calculation rules + regs is correct or not. RFCs are doing my head in. I think I understand most of the theory: - 433.1.204 lists a specific case where a RFC protected by a 30/32A protective...
  14. A

    2 certs one job

    Hiya From a 3 phase board i have pulled a submain in to feed a 6 way single phase board and wired my final circuits from there. But i have also wired a single radial to feed a socket from the 3 phase board via a rcbo. How do you cater for this lot on test sheets? Would you do a...
  15. J

    ring circuit why ?

    why do people use a ring circuit? i understand that the cable for example 2.5mm twin and earth can carry more current in theory another reason i can think of dont know if its why is the circuit may require a heavy use of socket outlets e.g an office using computers etc... but what other reasons...
    • Jake1579
    • Thread
    • circuit final outlets ring ring circuit still
    • Replies: 6
    • Forum: UK Electrical Forum
  16. A

    2.5mm2 Ring Final Circuit vs 4.0mm2 Radial

    I recently read an article about the advantages of both the RFC and Radial circuits, after which I must admit that I am more swayed towards the Radial. What are others thoughts? What do you prefer and why?
    • atm84
    • Thread
    • cables circuit final radial ring ring final socket strange
    • Replies: 116
    • Forum: UK Electrical Forum
  17. P

    supplementary bonding and rcd protection

    Hi, a recent PIR has picked up no RCD protection and no supplemantry bonding to pipe work. Am i correct in saying if all circuits to bathroom are protected by RCD then supplementary bonding is not required?
  18. S

    Continuity of ring final on radial circuits

    Stuck on Unit 304 Task B, the question states the method on how to carry out a ring final test on a radial circuit. Thanks
  19. whinmoor

    Final Score...

    ... Polys 2 - Monos 6 Amazing scenes this lunchtime in Yorkshire !! I just had to stop the car and take a photo. There were no optimisers or micros on the rails but plenty of dangling cables. I wonder what the householder was quoted for. Why not fit some more to the left of the chimney? No...
  20. happysteve

    IR compliance - trainee (and mentors!) quiz

    Been reading up for my 2394/5 exams next week. Learnt some interesting stuff over the last few days. Thought I'd pose a simple quiz, as this was something that I misunderstood, and I'd be interested to find out if others do too (or if it was just me!) :) Just for fun, trainees and mentors can...
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

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