radials

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  1. A

    2.5mm2 ring main protected by 20amp breakers

    So an old colleague of mine stipulates that ring main should be protected by 20 amp breakers. Why you ask? Well he said because a piece of 2.5mm2 can only take circa 26 amps and if the ring main broke at any point it would effectively make it two radials, and it would be protected by a 32 amp...
    • atm84
    • Thread
    • breaker breakers main protected radials ring ring main
    • Replies: 31
    • Forum: UK Electrical Forum
  2. M

    Two radials from one 20A mcb

    I have been asked to add a double socket in or right next to the board cupboard. There is no spare ways and the house sockets are wired as two radials. There is however a circuit for an electric fire wired in 2.5 T+E from a 20a mcb, i was under the impression there is only to be one...
  3. uksparks

    Australian Plugs

    Hi, I had a nice little job of cutting 20 Australian plugs off appliances etc the other day and replacing with uk plugs... It occurred to me though, none of them had fuses?.. I have no idea how it works down under and just wondered if someone would kindly tell me why the appliances are not fused.
  4. T

    20 amp mcbs on 2.5 radials

    Done a eicr on a tt no rcd protection and ze of 268 ohms. 3 Radials in 2.5mm going to 32 amp mcb. Just been plastered throughout and some type of rewire i think, the house is going through a sale and was requested by buyers solicitor. I was going to replace cu and put sockets on three...
  5. N

    2 radials on 1 MCB

    Hi all, I have tested a consumer unit and found that there are 2 16a circuits with 2 radials on each. One circuit feeds 1 DSSO in utility room and 1 DSSO under the stairs ( 2 radials) The other circuit feeds 2 DSSO in bedroom and 1 DSSO in kitchen (2 radials) There are no spare ways...
  6. D

    help regarding radial circuits

    Hi all, Today i found 2 radial circuits in a 32amp mcb breaker, would you give it a code c1 or c2 on a eic report? Also what are the main dangers of having these together? Cheers Dem
    • demkap
    • Thread
    • breaker circuit circuits prize radial radials regarding
    • Replies: 82
    • Forum: UK Electrical Forum
  7. R

    Old storage heater radials.

    A property has 10 radial circuits supplied off an old Economy 7 off peak board that used to feed storage heaters, they are now converted to 10 individualy fused radial 13A socket outlets. The owner wants you to replace both of his consumer units, where you going with this. Circuit id and...
    • Richard3009
    • Thread
    • heater old radials storage storage heater
    • Replies: 33
    • Forum: UK Electrical Forum
  8. T

    high integrity board

    I'm wiring a ring main into a room in a house that is being converted to an office with Dado trunking. The guy has several computers and loads of IT equipment therefore I'm weary of putting it on an RCD due to the earth leakage. Im changing the CU also so ive ordered a high integrity board with...
    • tbs1983
    • Thread
    • board circuit integrity leakage office protection radials
    • Replies: 18
    • Forum: UK Electrical Forum
  9. P

    open ring to radials on con unit changes

    Hi all, whats people views on best practice when finding open/damaged rings when changing consumer units. Obviously sort it is first option but what when customer doesn't want/can't have floor lifted to replace a damaged cable and surface mounting isn't an option. I like to put on different...
  10. W

    testing 2 radials in one mcb

    When testing a Consumer Unit with two radials feeding one socket on each circuit, wich results would you record on the condition report?
  11. G

    Ring Final Circuits ... each leg into a separate MCB!

    I was inspecting the electrical installation in a large 5-bed late Victorian or early Edwardian property that I am considering buying in Scotland when I came across the 'socket circuits'; 3 32A MCBs so I expected 3 Ring Final Circuits. Each MCB only had one wire so adjust assumptions - they...
  12. L

    Underfloor heating

    Hi guys, first time poster, so please be kind! Can anyone advise me whether underfloor heating should be on its own circuit or whether a fcu off the ring final would be acceptable? This is for a kitchen at my mum and dads. I've first fixed the cables. A couple of 6mm for the two ovens they are...
    • Lamps1970
    • Thread
    • first heating kitchen radials underfloor underfloor heating
    • Replies: 15
    • Forum: UK Electrical Forum
  13. chrish_1977

    ring to spider radials ?!?

    Hi guys, just your thoughts please, customer has come to me after having a eicr (by someone else). Anyway there a circuit for sockets (5 in total) its on one 2.5 from the board and then goes to a jb under floor somewhere (not a problem I hear you say) but from this jb it turns from a 2.5 t+e to...
  14. Gnasher

    Ring testing

    Hi all can you help to settle a argument. Situation 2 x 4mm in the top of a 32mm. MCB Option 1 This indicates to me that it is either 2 radials in the same MCB, or a 4mm ring. A ring continuity test should be carried out to prove that a ring exists or it is 2 radials. If a ring exists...
  15. P

    Radial circuit too long

    Hi went to a job yesterday there was 3 ring mains so i thought, after testing them they were radials but were all terminated into 32 a mcbs 2 wire in them did R1 R2 TESTS and readings were high 3.2 ohms/ 1.9ohms these were the highest there are a further 4 radials which are around the 1.9 the...
    • pablo4321
    • Thread
    • circuit circuits long radial radial circuit radials readings
    • Replies: 21
    • Forum: UK Electrical Forum
  16. D

    Two radials together, when separated it trips dual rcd board.

    I have just installed a new wylex dual rcd board replacing an old memera 2000 single rcd. Whilst wiring in I noticed what was purporting to be a ring main was in fact two radials in the same breaker, no problem I thought, I will split them up, one on each rcd, however, having done that it will...
  17. O

    Final Circuits - Ring or Radial?

    I was speaking to an Electrical Engineering suit not too long ago, He reckons that there's talk of Ring Final Circuits being done away with and the preference to install Radials only. Anyone else heard this little gem. Whats the general preference of everyone for the two systems???? Anyone...
    • OldskoolUpNorth
    • Thread
    • circuit circuits final radial radials ring
    • Replies: 24
    • Forum: UK Electrical Forum
  18. S

    Radials Circuit Designing

    Hi guys, doing a rewire in which i plan to do the circuits in 4mm as radials, one down one up and kitchen. When designing how can i work out the loading along the circuit? Also how can you work out the loading on a lighting circuit radial as the load will be split along the length so the...
    • Snapester
    • Thread
    • circuit current length lighting radial radials section
    • Replies: 21
    • Forum: UK Electrical Forum
  19. sythai

    Conduit cable calcs....help please ?

    Just calculating my In... conduit with singles run. For the grouping factor - Cg it states number of circuits If I have 2 circuits, but this consists of 18 x singles (e.g 1 x ring = 6 and 4 x radials) Would this still be a factor = 0.75 ? Thank you Sy
  20. P

    Rings or Radials

    Haven't been in the domestic side of things for a while.... I own a standard 3 bed house which is 30 yrs old 1x 50 amp cooker 1x 30amp RFC (for entire house) 1x 15amp immersion heater 1x 5amp upstairs lights 1x 5amp downstairs lights Going to add and move sockets in kitchen.... In the past...

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