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insulation resistance

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  1. L

    Insulation Resistance test question?

    Hi guys, I have what may seem a basic question. If a cable has been skinned at some point along the circuit would an IR test pick that up in the readings? Many thanks
  2. B

    3 Phase Insulation Resistance Test on motor & TP & N skt help

    Looking for some advice on how to carry out a IR test on a 3-phase motor and a TP & N skt, these are parts of a module I have failed on a test and am looking to see where I am going wrong and what the normal procedure for carrying out this test would be?
  3. Mark42

    Insulation resistance failure on rubber flex. Why?

    Two years ago I installed some garden lighting, using u/g SWA to Wiska boxes, then 3-core 0.75mm rubber flex downleads from each LED fitting. This week the 30mA RCBO kept tripping. I assumed a luminaire fault, or moisture in a Wiska box, but no. It was leakage across all three cores of one 10m...
  4. B

    Insulation resistance testing

    Hi have AM2 next week and just need some help, 3 phase TP+N board, two way and intermediate lighting circuit with 3 switches obviously and one light, doing a global IR test, the lighting circuit say is on L1, so I’m testing all other circuits at once too do I have to switch my switches for every...
  5. 1

    Insulation resistance test

    Hi all on a eicr insulation resistance test between live conductors to earth gn3 says join l & n and test to earth is there any difference between that and testing phase to earth then neutral to earth? As you guys know some boards are a right mess and not in order to locate which belongs to which
  6. K

    EICR IR testing for newbies

    I'm qualified now to test and inspect with my company, which I've worked with for years and they are now about to send me out alone. Scary days ahead :eek: I've only ever had one issue with doing EICR's at training and its to do with IR testing. Here's a few questions for any of the experienced...
  7. S

    500v Insulation Resistance Test ok?

    Hi all, still training so please forgive my very simple question. Why is it ok to test an appliance at 500vdc when PAT testing but great care should be taken to remove all equipment when IR verifying a new circuit installation? Is it simply just because connected equipment will make a nonsense...
  8. D

    SMA 4000TL 'Insulation resistance' error

    I've recently found the green light flashing and the red light on on our SMA 4000TL with the message 'Insulation resistance, check generator' on the display. Checking the ERROROB2.CSV files I can see that this isn't the first time it has errored in this way, it has happened on odd occasions for...
  9. P

    Low insulation resistance reading

    i've recently installed a new Consumer unit at home and will be using it as my first niceic assessment. I'm getting an insulation resistance reading of 1.7 on a lighting circuit in the osg it says minimum reading of 1 is this going to be ok? I've discovered what section of the circuit is giving...
  10. N

    Insulation Resistance test with 12v transformers

    I am installing a C/U and the kitchen has some old Down lights installed with 10 x 12 volt transformers connected. I know I could disconnect all the transformers but I don't plan to do that as it will be a real pain due to how the plasterboard has been bodged. Some opinions suggest the IR...
  11. T

    Insulation Resistance Testing

    Evening chaps, In the process of taking my 2394/2395 testing course and just trying to fully get my head around insulation resistance testing predominantly in occupied domestic property's where it isn't possible to dissconnect all loads from the circuit. I am aware of the need to link out the...
  12. D

    3-Phase Motor Testing

    Hi I'm Darren and I work as a apprentice for a manufacturing company. I was testing a 3kw 3-phase motor as it blew a fuse and when doing my IR test down to earth I got a reading of around 11Gohms. I was under the impression that the reading had to be above 1Mohm which this is as far as I am...
  13. J

    Insulation resistance testing Lighting circuit

    Hi everyone. I'm looking for advise on how to test IR on commercial lighting. There's so many lights on 1 circuit , do I have to take out all the lamps in all the lights to perform the test or can I simply test between LN -E ? Even though I have spent lots of time testing domestic installs and...
  14. B

    Insulation resistance

    Is this right anyone? So basically I'm gonna test the whole consumer unit with an insulation resistance test rather than every circuit would you do basically I need to show my college and I've only been testing since last week and need to show an insulation resistance test of the whole board and...
  15. B

    Insulation resistance test help

    Hi I want to test the whole board at once with an insulation test so turn off main isolator and breakers turn tester to 500v? And is the best thing to do, the incoming tails L+N put in a link between them and connect your probes to the link and other to earth also can you still operate light...
  16. D

    Insulation Resistance - Head Scratcher

    Hi folks, Was sent out to a job today to add in a hot water pump underneath a kitchen sink in a kitchen that had recently been done up. Took with me just a socket thinking that the electrician doing the kitchen work would have RCD'd it - but no. The woman had her own joiner do the work so I'm...
  17. sparky1508

    Insulation resistance problem

    Hi all, I have done an insulation resistance test on a ring final circuit today and when I do L - N I'm getting 0.01Mohm. Checked all sockets for loose connections but found nothing. I plan on splitting the ring tomorrow and testing each individual length from socket to socket. It's gonna be a...
  18. F

    Insulation resistance test on a db supplied via a time clock

    Hi guys new to this website just a quick question as it has been a while I have a small 6 way distribution board this only becomes live via a time clock supply wired into it I'm going to be testing this board with a IR dead test on each circuit just to make sure according to guidance note 3 & on...
  19. J

    Low Insulation resistance readings when connecting final socket on ring?

    Hello All wondering if anyone could shed some light on a problem i have with my IR readings. I recently rewired a house.. took care pulling cables in etc . finished 1st fix, checked cables by looping ring main in connector blocks and doing continuity and IR test . continuity was ok, IR read...
  20. S

    Insulation resistance problem

    Hi all i was wondering if anyone could shed some light on my problem. Came to test a ring circuit today L-L 1.23 ohms N-N 1.23 ohms E-E 1.98 R1+R2 0.73 then i did my insulation resistance tests L-N 500 ohms N-E 500 ohms then L-E 0.00. Nothing plugged in, only a few sockets connected the rest in...

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