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  1. E

    Immersion Element Test Results

    An elderly couple have asked me to look into why their immersion heater isn't heating the water. I have disconnected the element and, using an ohmeter, am getting the following readings: Anywhere from 700 ohms to 60K ohms L-N 70 ohms N-E 500 ohms and climbing L-E I suspect the element is...
  2. F

    Lucien Nunes - Results of IR tests on equipment

    Hi Lucian. I hope you see this post that I said I was going to put up in response to your information. After what you said about being surprised about such a low resistance with equipment and because I hadn't given this too much thought, I had only assumed that some equipment had very low IR I...
  3. HappyHippyDad

    L-N IR results indicating fault or load left on?

    I have had to fault find on a very old, big house (with a bad damp problem) as the MCB feeding the kitchen sockets is tripping. There is no RCD. It is a ring circuit. The IR results L-E are 0.003MΩ. L-N IR results indicated something left plugged in (really sorry but I can't find the note I...
  4. i=p/u

    max zs results

    Hello, has anyone made up a new handy form filling sheet for the new max zs times??? also the book doesnt do 1A, 2A 4A mcbs? where do i find ? thx
  5. Soulsurfer

    Concerning R1 + R2 and r1,rn,r2 ring final results ?

    Hi all, Can anyone shed any light on some strange really low readings on a ring final circuit I've just 2nd fixed including replacing some legs as the IR was bad in places on old cabling before. Thought it could be my MFT batteries going and therefore giving possibility of silly results but...
  6. M

    Help Needed on results of an IPM4 electrical report please

    Hi, I have attached the findings of an IPM4 report on a house I am looking to purchase. What I want to know is how critical are any of the points highlighted? do they pose any serious risks etc Any help would be greatly appreciated. Thanks,
    • millerdave
    • Thread
    • electric electrical needed please results
    • Replies: 10
    • Forum: UK Electrical Forum
  7. B

    Tripping RCD advice

    Hi! Need to pick some brains as I am truly stumped by this one call out to a flat with nuisance tripping. On arrival tested circuits and all IR tests between LE were coming up relatively low, between 0.50-0.80 with the exception of ring main coming out as 0.01. There has recently been a leak...
  8. E

    testing 4 pole RCD - funny results?

    Can anybody help with this one? Installation: TT system, (Ra 27 ohms), 3 phase & neutral incoming supply. A 4 pole 30mA RCD is at the head of the board, from which there is a 3 phase motor circuit and a 3 phase & neutral feed to a second board. The second board has a number of 230V final...
  9. E

    Stupid Question- Do i need to go back for rcd test?

    Just done a small additional Immersion circuit install. Run cable through floor space and on surface in trunking. Fitted to a new MCB on spare way in existing consumer unit. Unit had a main switch and a seperate rcd protecting the MCB's. Do I need to go back and get the rcd test results for the...
  10. A

    RCD tripping

    I have a strange RCD tripping problem, we have a dual RCD consumer unit, when the main switch is turned off both RCD s activate, they have activated individually but not at the same time. There is no continuity between the neutrals and both sides have an insulation resistance of >25 meg, we have...
    • AlarKris
    • Thread
    • rcd rcd tripping results something switch tests tripping
    • Replies: 16
    • Forum: The Welcome Forum
  11. a-z electrics

    Curve (Denmans) RCDs

    Anyone had problems with these rcds? Control Gear Direct, 30mA, 63A 2 pole.. I recently bought two 10-way dual rcd boards from denmans.. first one had an rcd which didnt trip on test button, even with load removed. Second rcd didnt trip under 300mS, but button worked. Swapped them for the...
  12. R

    speed up testing, cert filling

    Hi guys, I used to fil all my certs out on pads on the job and hand to customer, that was back when i was doing mostly domestic work. I now find myself doing a lot of commercial testing mainly for the same client. I have started useing the NICEIC online certification......so record results rough...
  13. B

    TT earth results

    Hi I've been testing a garage installation and the house is quite remote and has a tt supply. The supply to the garage is swa supplied via a 32a mcb on a 30mA rcd main switch. The earth spike resistance is 21ohms. The earth fault loop impediance at the main switch is 22.1ohms. At the garage it...
  14. D

    Fault on ring main

    My in laws recently returned from holiday to find that their downstairs ring main was off.when I looked the mcb for this circuit was in the odd position and on trying to switch on it tripped the main rcd switch for this set of circuits.after first unplugging any appliances and this not resolving...
    • Durksy
    • Thread
    • circuit disconnected fault main neutral results ring ring main
    • Replies: 12
    • Forum: UK Electrical Forum
  15. V

    two circuits in one mcb.

    Hello Just opened up a consumer unit, to find two circuits (lights and extractors) coming out of one 10 amp mcb. This isn't right is it? What should I do come the time to test and record results? Where would I write them down? I've always thought its 1 fuse/breaker per circuit? head...
  16. B

    Ring end to end results not text book for cu change.. do we need to ensure 1.67 times

    Hi, Cu change pre tests (TT) indicate non text book results: r1=072, rn=0.92, r2=1.58 another ring: r1=0.67 n=0.67 r2=1.60 As can be seen the r2 values are more than 1.67 times r1 or rn possibly due to loose connections. Are we responsible to try and bring these values in line for a cu...
  17. HappyHippyDad

    Is there a table of expected R1+R2 results in BS7671?

    Evening... I always use my OSG to find R1+R2 when needed for designing a circuit (staying withing the Zs limits), but I wondered if the same table is somewhere in BS7671? Its table I1 in the OSG. I've hunted high and low so I expect it's just something that the OSG offers and isn't in BS7671...
  18. L

    IR Test Results Issue

    I am getting erratic results on a house which i am currently working on. The house has been sat at 2nd fix stage for about 6 weeks and is damp. I came to commission it today and my IR readings are poor. I have a megger so its max is 999MOhms but i am getting results of 80-120MOhms on Rings and...
    • LankyWill
    • Thread
    • ir test issue results test
    • Replies: 4
    • Forum: UK Electrical Forum
  19. chrish_1977

    test results question

    Morning guys, sorry if this is been answered before but I'm fuming (again). I have again had my eicr questioned by our qs. This time in particular my test results. Basically every result I measure with my tester unless there is some reason I can't, obviously note it all on the schedule of test...
  20. N

    2394 Results

    I'm well chuffed, I passed my 2394 exam today. Anybody else get their results today.

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