ir test

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  1. J

    IR test

    Some advice please . when doing IR test , generally i test the lighting circuit with the load shorted (L-N) and test across earth and live or neutral as removing all lamps and disconnecting fluorscents is time consuming . now and again i will test the whole CU in this way . Firstly , why is it...
  2. N

    IR test sets off gas hob igniters - WTF?

    As per the title really, IR test @250V DC, (L+N)-E, whole-installation test of domestic property, main isolator switch open (obviously), testing caused the piezo igniters on the kitchen gas hob to spark even though no-one was pressing the knob to ignite them, and failure of IR test at about...
  3. N

    Boiler fails IR test (?)

    Wotcha, I got asked to follow up on a low (<1Mohm) whole-installation (L+N)-E IR result picked up on an EICR (not done by me) on a domestic property. Testing only at 250Vdc, it turned out this is is the result only if the C.H. boiler is in circuit. With boiler isolated, same test yields...
  4. G

    ir test

    ring main getting >999 between l-n l-e n-e but l-l and n-n is a 0.00 reading why is this ???
  5. I

    IR test

    can anyone tell me when testing a lighting circuit between L&N to earth what does it prove , cheers
  6. J

    Ir test on bs 3036 wylex board

    Hi all, l recently did a eicr on a fish and chip shop. 3 phases (only one phase in use by chip shop). Earth conductor is welded together to each phase by TN-S earthing system means. When it came to the IR test, l tested the norm tests, L-E, L-N & N-E. Bearing in mind that we are now supposed...
  7. M

    2/3 way Lighting and IR test

    Hi there. I know that in theory the IR test on a lighting cct requires all loads to be removed (ideally), and the 2 way switching operated and several readings taken - to ensure both strappers are tested. My question is on the logic behind the multiple readings. When the light being...
  8. L

    IR test 2391 The way to answer ?

    Hi guys, Just wanted to get your advice on answering a 2391 question. If i was to get a question "Describe how to carry out an IR test on a radial socket circuit of a new installation" for example , would i be able to mention the safe isolation procedure like this 1)Seek Permission /Inform...
  9. M

    Combined L&N IR test on all RCBO board

    Hi Carrying out a whole board insulation resistance test , very large house and LOTS of vulnerable equipment so wish to do a L&N combined [ link busbar to neutral bar] on whole board. Each circuit is on a RCBO , how would i test this, do the neutral and earth fly leads of each RCBO need to be...
  10. E

    IR test

    If you have an RCD fitted then leakage from either live conductor to CPC would trip the RCD and a live to live conductor short would trip the MCB. Why do we IR test if there is an RCD then?! I understand it is to check the state of the insulation but the safety measures are there already. I...
  11. P

    IR Test on 12v Downlighters

    Can anyone help me please? I've just finished re-wiring a property, with nearly all lighting on 12v downlighters. Not too sure how to carry out the IR at 500v, as I'm assuming it will blow the transformers. To make it easy they're also all on dimmers lol! I know I have to disconnect the dimmers...
  12. B

    new circuit ir test

    Hello people Testing a new RFC yesterday. Property is a bungalow cable run in loft . All tests perfect apart from IR readings ok all between 400 & 600 meg but new cable would expect nearer >999 Checked cable run as mostly accessable and no damp or new plaster. Only thing is it was extremly hot...
  13. B

    Help! IR test results driving me mad

    Hi all I went round to a house with a view to move a switchline in lounge from 1 side of a door to the other. I tested insulation resistance and got 0.38Mohms L-E. Ok, just a case of identifying which of the cables is causing the problem, sort it out and move the switchline. The circuit is a...
  14. A

    IR test between neutral and earth

    Hi there,another question from me,I have a 10mm radial for oven&hob,so doing IR test It shows me 0.22 between neutral and earth,so I went to investigation what could cause a problem,there is a 60amp JB for that circuit above the hanging cupboards in the kitchen,so first thing I did,disconnected...
  15. D

    IR test results.

    Hi guys, Tested my new kitchen circuit today, all results as expected for a new RFC except the IR between line and earth. The resistance between line and neutral and neutral and earth is >1000 MOhms as expected, but between line and earth it's in the region of 3 MOhms. After disconnecting...
    • DNS1
    • Thread
    • aus ir test results test
    • Replies: 9
    • Forum: Australia
  16. W

    global ir test ???

    Hi to all..have heard some people talk about a basic '1st' test regarding a possible cu change , called a global ir test. I understand that this that this a test performed on all circuits which may assist in determining if a fault is present before delving into the indivdual circuits. Being new...
  17. S

    IR test query

    Evening people Right,doing a Periodic on some modular built studios & have a few questions i hope you guys can help me with,IR test on a lighting circuit with a few pir's,the pir's are not accessable,so i'm unable to disconnect then, so when doing a IR test is it right to test Live & neutral to...
  18. S

    IR test on lighting circuit

    During a PIR on a domestic dwelling before a cu change i tested IR on the board found 0.28Mohm between L-N. N-E and L-E were 75Mohm and 55Mohm, isolated eached circuit and traced it to the upstairs lighting. Re-tested on this circuit but still low between L-N, double checked all loads had been...
  19. N

    IR test on 110v emergency lighting circuit

    Could anyone please advise on a IR (250V) reading of 0.02MΩ on the permanent live of an emergency lighting circuit to earth ONLY. Lamps have being removed, but ballasts and batteries are still in circuit? The breaker is mechanically sound and stays on with this apparent dead short to earth...
  20. I

    IR Test on Lighting circuit (dimmer switches)

    hi there need a little clarification. when IR testing a lighting circuit that contains sensitive equipment such as dimmer switches, is it possible to test LN-E and not damage the dimmer switch. i keep thinking that even with this method LN-E will still pass 500v through the switch, or am i...
    • ianphilip007
    • Thread
    • aus circuit dimmer ir test lighting lighting circuit switch switches test
    • Replies: 9
    • Forum: Australia

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