ir test

  1. G

    IR test problem

    Just finished chasin round a house tryin to find the cause of the 0M ohm reading on a ring circuit IR test. I spent about 45 minutes ruling out the central heating which was fed of the ring. Nope not that. So back to basics, break the ring, find out which half the problem is on. Several sockets...
    • Gaz Bryan
    • Thread
    • aus electricians' talk ir test problem test
    • Replies: 7
    • Forum: Australia
  2. C

    LN to eath IR test

    just a quick one if i did a insulation resistance test between L N (together) and earth would i still need to disconnect bulbs and voltage sensitive equipment??? cheers in advance
  3. J

    IR test prior to CU change. Am I being over cautious?

    Afternoon all. Just been for an initial look at a potential CU change. Customer has an old Wylex fuseboard, installed when his property was rewired 20 years ago. I did a 250v IR test across the N and E bars and got a reading of 3.4Mohms. Each N tested individually to the E bar resulted in...
  4. B

    Problem with IR test result on RFC's

    Hi, I've been testing my house and few others in the area as a way of gaining experience. I'm mostly getting satisfactory results expect for insulation resistance testing on the ring circuits. I follow procedure and remove all plugs from sockets and turn them on but when I do the test I get a...
  5. E

    Zero resistance for L-N doing IR test

    Hi all, I'm testing a 35 year old system, with 11 circuits split across 2 RCDs. 3 of these are lighting circuits 2 come out fine with an IR test but one fails L-N with 0.0 ohms. This lighting circuit is comprised of 3 ordinary lights, 3 chandaliers and 3 fluourescents. A number of switches...
  6. B

    weird IR test results with RCDs

    Hi guys, I'm doing some revision for 2391 and I've built a test rig to practice on, just one radial (lights) and a ring. The testing was all going fine until the IR tests. Results were as follows Whole installation: R1 to Rn = 0.13MOhms:eek: (R1+Rn) to R2 = >299MOhms R1 to R2...
  7. P

    quick IR test question

    Am i correct in thinking that if you did an insulation resistance test part way along a radial back to the CU with it switched on and just the mcb for that circuit tripped that you should get a zero reading between N and CPC (with a TN-C-S supply). cheers.
  8. R

    Quick IR Test Question

    Easy one for ya, when carrying out an IR test on a radiel such as a cooker feed. Do you normally pull the hob and disconnect the cable and then test IR or would connecting Live & Neutral together and testing to earth ok? Cheers
  9. M

    fluke IR test on ring main

    http://i598.photobucket.com/albums/tt69/musicmaster050/megger1.jpg http://i598.photobucket.com/albums/tt69/musicmaster050/megger.jpg link to the readings and my meter in use is this correct thanx alot from mike used the green croc clip on the neu and i put the red croc clip on the line...
  10. T

    Is it Just me who Hesitates on IR test ?

    I always seem to have doubts before i press that TEST Button at 500v, Ive got in the habbit of always slinging 250v down before i go upto 500v. And the past few IR test's ive done are always very low... Just my bad luck i suppose. I will test at 250v and see what i get, if i get the 0.00...
  11. M

    IR test on shop best way to test

    I have to test shop today but it not possible to disconect every light fitting (1200 * 600 fittings)and other ones with electronic ballists . Also i can not get in to disconnect the tillsand other sockets what do you think the best way to tes the IR on this
  12. C

    smoke alarms vunerable to ir test?

    hey all!! would a smoke alarm circuit be vunerable or give out false readings on the live insulation resistance test? or is it worth me just connecting the lives and testing to earth? well and the interconnecter. cheers all :)
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