insulation resistance

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  1. L

    Insulation resistance test on a whole consumer unit?HELP

    Can any one explain to me the correct method to test insulation resistance on a 3 phase consumer unit all at once as apposed to testing each final circuit individually? Especialy circuits vulnerable to test voltage. GN3 states that you connect line and neutral together and test to eath is that...
  2. C

    Insulation Resistance testing - again!

    Hi Getting used to Metrel tester and am getting used to testing and was just after advice on clarifying some points: 1 - FCU's with neon indicators on IR tests - whats the best way of disconnecting the neon lights on these if they cant be disconnected? Do I keep that particular FCU switched...
    • chrisgc
    • Thread
    • again cooker electricians' talk getting insulation insulation resistance insulation resistance testing resistance result sheets testing
    • Replies: 28
    • Forum: Periodic Inspection Reporting & Certification
  3. P

    insulation resistance testing question

    If some of the circuits of a shower block for a big site have been tested for insulation resistance during constuction. what is the possible effect that insulation resistance testing the whole installation when completed have on values obtain on completion compared with for those circuits when...
    • paulthemagpie
    • Thread
    • answers electricians' talk insulation insulation resistance insulation resistance testing question resistance tested testing thought
    • Replies: 9
    • Forum: UK Electrical Forum
  4. C

    250v Insulation Resistance test - Lots of D/lights

    I know when a 250v insulation resistance test can and cant be done. But when it says that a 250v is ok when its impractical - what is the definition of impractical? Ie for this scenario: How many downlights would be deemed as impractical to remove (as they are buggers sometimes to remove...
  5. S

    Insulation Resistance Testing Fluorescent Lights Etc

    The large domestic garage that I wish to test has a single lighting circuit with 6 fluorescent lamps inside and a floodlight with a PIR. It also has neons on each of the 2 way switches for the internal lighting and a neon on the switch for the outside floodlight with PIR. Any tips on how to go...
    • seftonbarn
    • Thread
    • electricians' talk fluorescent fluorescent lights insulation insulation resistance insulation resistance testing lighting lights resistance testing
    • Replies: 19
    • Forum: Lighting Forum
  6. rustynails

    SOLVED: 2392 Question Parallel Insulation Resistance

    The insulation resistance of two circuits is of 40M and 36M respectively. When tested together what would be approximately the total insulation resistance: A: 1440M B: 76M C: 19M D: 4M I don't know the answer, so how do you figure this out? :rolleyes2:
  7. I

    Insulation resistance test

    Anyone who knows. Lighting circuit with MAINS voltage LED downlighters. If I do a 500v Insulation Resistance test on LED bulbs. Will it knock out the bulbs. I know its electronic equipment that gets destroyed predominently. Its quite a few down lighters, didn't want to hit the button without...
  8. Amp David

    Insulation Resistance query

    Just at a job this morning where customer has an RCD that trips whenever it likes with no pattern in when it trips. Testing lives to CPC found that RFC was showing 10.5 Meg ohms which as opposed to >299 for all other circuits. The only item of equipment that wasn't unplugged due to location of...
  9. S

    Insulation Resistance Testing (Whole board at the same time).

    Lads, I am soon to be doing an EICR on a large working mens club (not being paid in ale). My question is this...There is going to be lots of lamps i cant take out,equiptment still plugged in that i cant find etc etc so im gonna have to test between L-N to E . When carrying out the IR test at...
  10. S

    PIR Insulation Resistance Test

    Just had a PIR done for a house we were hoping to buy. The house - victorian/edwardian terrace - has 8 circuits and the wiring is approx 20yrs old according to the PIR. The report gives the same reading for ALL circuits. Live-Live is 1.01 Mohms and Live-E is 0.17 Mohms. Continuity Polarity...
    • swift colin
    • Thread
    • circuit circuits electricians' talk insulation insulation resistance insulation resistance test pir readings resistance test values
    • Replies: 21
    • Forum: Periodic Inspection Reporting & Certification
  11. M

    Insulation resistance

    When testing insulation resistance between line and neutral conductors of a ring circuit you taught to unplug all devices to irradicate false readings. But as double sockets switch the line conductor, am I right in saying you could just switch them all off?
  12. B

    Insulation resistance testing - combined L & N test

    Good Morning all, When you are doing the combined L&N to earth test on a circuit that contains vulnerable items, do you record the result in all 3 columns ? And do you have to mark the results that you have done the combined test? Thanks
  13. L

    New build insulation resistance

    Hi, first post on here and interested in your views on this. I have just second fixed two 4 bed houses and have some less than perfect results on the insulation resistance tests on most circuits. I'm aware of the minimum requirement in the regs is 1 meg but anything less than off the scale...
  14. K

    Insulation Resistance Test??

    Hello, im reading up on the insulation resistance test at the moment, when doing an insulation test on say a ringmain, and there is switched fused switches with neon, and the switch is OFF, can this still affect the reading? also when doing the L to N, why is it sometimes get really low reading...
  15. P

    R1&R2 and Insulation Resistance Test with fixed appliances

    Can anyone help me, I've been asked to do an inspection on a property that is on a single 32A ring, including the kitchen. The appliances are all integrated and aren't spurs. Is there a way to perform the test with these appliances in place? Thanks!
  16. A

    incorrect insulation resistance reading

    Hi all, be gentle. I have been asked to renew a cu so did some testing before commiting myself to the job. The board is fairly old with breakers and main switch. I was doing a ins resistance test on a radial that fed 4 sockets in the kitchen and a two way board in the garage. The cable at the...
  17. A

    Fuseboard replacement: Advice on minimum insulation resistance level for certificate

    Hello, I'm having my old fuseboard replaced, had conflicting advice from two different electricians regarding the minimum insulation resistance levels that existing wiring needs to have in order to pass test - one says it's 5mega ohms, the other says its just 1mega ohm. Can anyone confirm what's...
    • adamant
    • Thread
    • advice aus certificate electricians' talk fuse fuseboard insulation insulation resistance level minimum replacement resistance
    • Replies: 37
    • Forum: Australia
  18. W

    Insulation Resistance - Bathroom Extract Fan

    Hi there, Would carrying out an Insulation Resistance test on a lighting circuit which has a bathroom extract fan damage it? Thanks
  19. E

    Insulation resistance, odd results!

    Hey guys! first real post on the forum so be gentle! Basically i have installed a new installation feeding a new cinema room, it has 8 mains powered down lighters ( no transformer ) and 2 wall lights, When i tested the installation for IR i got the following results: L-N - 1000 M ohms L-E -...
  20. S

    Insulation resistance issue!

    Hi all posted this issue about a month ago and I'm still having problems. I'm doing an insulation resistance test on a ring circuit, L-n 500 mega ohms N-e 500 mega ohms But L-e is around the 150 mega ohms reading. I no this is still well within the regulations but it's new cable...
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