c.u

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  1. Weezy

    UK Exceeding the max Ze in this situation still be considered to comply?

    If the max Ze for Tncs is 0.35 but you had a 1361 60amp fused isolator before the c.u with the 1361 having a max Zs of 0.56 (from the 80% chart) if the recorded reading at the c.u was let’s say 0.47 ohms would that now be considered to comply? i can’t see why it wouldn’t.
  2. Z

    Steel conduit used as CPC in flat, can’t find bonding, can’t find ring main CPC at C.U

    I’ve been asked to add a couple of extra points to the single ring main in a flat. Building fabric is concrete, all of the electrical installation is steel conduit buried in the concrete. I opened the consumer unit and could only see one CPC for a radial socket, as well as the main Earth. No...
    • ZEDEZ
    • Thread
    • bonding c.u conduit cpc lighting main ring ring main steel steel conduit wired
    • Replies: 11
    • Forum: UK Electrical Forum
  3. B

    Advice on cost for swapping C.U. old for new please

    Hi, i have been quoted £455 for removing existing C.U. (no RCD) and replacing with a new one with 2 RCD's (toolstation have them for £78) there are 9 circuits in all, it seems a bit steep to me, but perhaps i am out of touch. it is easy to access. i would appreciate any comments. Thanks.
    • branler
    • Thread
    • advice c.u consumer cost installation new old please prices right
    • Replies: 17
    • Forum: UK Electrical Forum
  4. Z

    SWA from supply to C.U questions

    Up until now every installation I've worked on has involved the C.U being within 3m of the supply. The job I'm working on at the moment is a domestic rewire that has had the supply moved to a box on the outside of the property, and the new C.U will be in a utility room about 4 - 5m away from...
  5. C

    C.U Upgrade & Short cables...

    Hi all. I have been meaning to ask this for quite sometime. It seems to be common practice for a few electricians, some of which have been sparky for over 30 years, to had a small length of cable by adding a terminal block. Is this really allowed? It seems that if cables are short then...
    • Carlos Arruda
    • Thread
    • c.u cables short upgrade
    • Replies: 23
    • Forum: UK Electrical Forum
  6. I

    Metal C.U (exsposed conductive part)

    hi all quick question , have an outbuilding which has no extrenuous conductive parts (water,gas,steel frame construction) the supply is TN-C-S and the earth has been extended to the outbuilding. The existing C.U. is plastic but has become damaged, are there any problems re earthing/bonding if...
  7. B

    water heaters and c.u

    hi all, been to look at a job for a plumber today who had fitted a pair of water storage heaters. he said he just needed a fcu brought to the area and the two heaters connected. however when i went round to have a look i was confronted with this - in my opinion it is alittle to close to the c.u...
  8. S

    Reasonable price for installing a C.U.?

    Hi folks, Newbie here. Many thanks in advance for an suggestions or help given. I am wondering about getting a new consumer unit fitted in my 3 bed terrace. Would I be best off getting a spark to do it and at what sort of price? I have never had any electrical problems with the old style...
    • scorpioguy
    • Thread
    • c.u installing price reasonable
    • Replies: 24
    • Forum: Business Related
  9. L

    CPC missing from ring circuit but end to end continuity at C.U!!

    Hello All This will be my first post for a bit of direction sincejoining the forum a while ago, and this issue has us a bit baffled. It is possible me and my mate have overlooked something really daft & obvious! Anyway here it is.. Yesterday we were doing a periodic on my mates flat which is...
    • linetech
    • Thread
    • backbox c.u calibri circuit continuity cpc missing ring ring circuit socket
    • Replies: 13
    • Forum: UK Electrical Forum
  10. C

    Schneider C.U

    Toolstation are doing a special offer on a consumer unit.http://www.****************/shop/p40297. Has anyone used these and got any opinions, Thanks
  11. T

    Additional c.u

    I intend to fit a new 2way cu through henley blocks, as the existing cu has no spare ways, my question is what tests are required on the existing cu and existing installation.
    • theoldvic
    • Thread
    • additional aus c.u
    • Replies: 3
    • Forum: Australia
  12. T

    New C.U or not?

    Called to look at a job for a young couple who had just bought a semi. They were told that the old fuse board may need replaceing so to call a spark etc. The house has had a full P.I.R within the last 12 months with no faults found apart from no RCD protection. So i informed them that the...
    • timo
    • Thread
    • aus c.u new
    • Replies: 8
    • Forum: Australia
  13. D

    C.U change covering letter

    Hi guys I want to cover myself when it comes to changing a board, i.e "this is the price for c.u change but if any faults are picked up and they need to be rectified this will incur additional costs etc obviously i check main bonds and do visual/check supply etc when i quote but the reason...
  14. S

    Can you reccomend a C.U ?

    Going to be rewiring the house soon and would like some recomendation on the Consumer unit i should get. was looking at this (THIS HAS GONE NOW) You can find it by searching our forum here, electrical advice. And of course tiling advice, and uk tiling forum.
    • steve447
    • Thread
    • aus c.u
    • Replies: 15
    • Forum: Australia
  15. T

    Garage C.U Testing / paperwork

    If the house has a garage and its fed from a 32A MCB in the main CU via a SWA to its own 2 or 4 way CU in the garage itself. Would the test results for the SWA supply go on the main results sheet and the garage on its own certificate ? Or maybe a break at the bottom on the results sheet by a few...
  16. G

    C.U change

    Gents, You have probably answered this one a good few times, but here goes. You have an old C.U that needs changing to an up to date one. Obviously the customer does not want a re-wire. What checks can you do on the old or new board to ensure that the existing wiring will accept the...
  17. scotsparky

    Placing of C.U

    Just back from Campeltown and had a look at 2 newly rewied flats. Flat 1 C.U high level in a cupboard in Kitchen with Meter below countertop in Kitchen Flat 2 Both C.U and Meter below counter in 2 different cupboards with a shelp which has to be removed before accessing D.B As this is a...
  18. R

    C.U Paperwork

    When you have completed a C.U change and done tests for each circuit etc what cert are you using for the results etc. Cheers
    • revolt3k
    • Thread
    • after aus before c.u change electrical electrical work installation paperwork
    • Replies: 5
    • Forum: Australia

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