fault finding

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  1. D

    Is it ok to do insulation resistance test on RCBO at 500v?

    I know you are not supposed to do a insulation test on circuits that are protected by an RCD at 500v because it may damage the electronic components inside the RCD so that's why you switch the RCD off before you test the individual circuits, however, what if the circuits are all protected by...
    • David345
    • Thread
    • dead test domestic testing fault finding insulation insulation resistance insulation resistance test insulation resistance testing ir test live test rcbo resistance test test and inspect testers testing testing and commisioning
    • Replies: 6
    • Forum: UK Electrical Forum
  2. W

    Fault finding advice

    Any fault finding advice It’s always been said to clients to unplug everything if a fault on socket circuits but can you Turn off counter top fused spurs for e.g washing machine instead of the hassle to get to the back of plugs. So I’m asking are fused spurs double pole. Also the same question...
  3. Sparkingmad

    Pro Electrician John Little

    Local friendly and reliable electrical company with 30 years experience in commercial, domestic & industrial fields. Wether it’s that extra socket in the kids bedroom to a garden lighting design and install, you will get the same level of service. In need of a new lighting design or upgrade to...
    • Sparkingmad
    • Resource
    • callouts commercial 3 phase domestic electrician eicr's fault finding fuseboard upgrade garden lights garden office landlords inspection re-wires surge protection
    • Category: England Trusted Electricians
  4. T

    Fault finding in the am2

    Hi I have my fault finding resit in a couple of weeks. the 3 possible faults are-open circuit short circuit and high resistance how would I test for each of the above faults and what sort of resolute am I looking for on the tester The test instruments I have is a low ohm continuity tester...
  5. B

    Tripping shower (fault finding)

    Hey guys , just been to a fault finding job and discovered what I think may be the problem but the consumer unit may be overloaded , please advise on the following ... The shower circuit is on a 32a MCB (wrong should be 40a) which I think is causing the tripping of the rcd , my dilemma is that...
  6. M

    UK AM2 Fault Finding

    Hello everyone, I have my AM2 fault finding resit on Friday and just wondering if anyone has any top tips as I don’t get to do any fault finding at work? In the AM2 you get 7 faults which can be on these circuits: 1 usually on a data circuit 2 on earth bonding to extraneous parts water pipe and...
  7. mak

    AM2 ring fault-finding headache

    How would I pinpoint a fault on a ring circuit with very little resistances, and without any visual clues, only by measuring. Say I have a break in neutral between db and first socket. How would I go about fault finding it? 1. I will use low resistance ohmmeter. 2. I will find that rn is not a...
  8. Gazthesparky

    Pro Electrician Garreth

    Glasgow Based small family run electrical company serving Glasgow and surrounding areas Providing all aspects of electrical work. Light Industrial, Commercial and Domestic Electricians. All aspects of electrical work undertaken please feel free to contact us to discuss your requirements...
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    • Resource
    • consumer unit upgrades fault finding nest pro installer nest smart controls new installs outdoor lighting outdoor power repairs security alarms smart lighting control smoke alarms
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  9. M

    Guidence on some fault finding for am2 please

    Guidence on fault finding am2 please
  10. C

    Fault finding ring final RCBO

    Done a condition report on a old mains board, everything good apart from ring final, got 0.55 nn 33.7ll and 3.8 on ee, changed board to main switch and rcbos, carried out a full accessory swap on all sockets and fuse spares in house, found some bad practice, twisted lives, n and earth's, no...
  11. B

    Control Circuit Fault Finding

    I spent 22 years in the RAF as a ground electrician. Essentially there are about 3000 different types of ground equipment used to keep aircraft and airfields running ranging from specialist fire engines designed exclusively for the RAF, hydraulic rigs and specialist 200v/400Hz generators to run...
  12. E

    FAULT FINDING

    ok, iv a domestic house with a shed 50 mtrs away supplied via 3x10 SWA on a B32A MCB. fault has been occurring the last few days which is the MCB in house tripping. I arrive and open both boards and remove both PE and N conductors from terminals followed by IR testing and was getting very poor...
  13. M

    UK What sequence to do when doing fault finding (AM2)

    Hi everyone just to let everyone know that I did my AM2 last week and I only failed on the fault finding part. I was very confident before going into the fault finding test but I lost my way and the pressure got to me. I'm so chuffed that I pass everything else. Just to explain what the test...
    • Mustard85
    • Thread
    • am2 am2 fault finding and/or testing doing fault fault finding finding sequence
    • Replies: 20
    • Forum: UK Electrical Forum
  14. G

    UK AM2 Fault Finding

    Hi guys, got my AM2 fault finding Resit on Monday and have a question. How would I check for reverse polarity? If I test say from the board L N or E to say a switched spur if I put one probe on the board side L then the other probe on the spur N and I get a reading, surely that means the fault...
  15. Baddegg

    Fault finding easier in the dark!

    Fault in lighting circuit, started poking about in the loft in the dark and managed to find it....:tearsofjoy:....
  16. kenny maccuish

    Found during fault finding

    Hi guys just wanted to ask if there are any Irish electricians here that can tell me whether these examples of making off SWA are accepted in Ireland. Just had to fault find a light not working in a garden and opened up a couple of manholes to find PVC 4x4 waterproof boxes with SWA going into...
  17. GBDamo

    Intermittent fault finding.

    Was called to a commercial lighting issue on Friday where the circuit had tripped, RCBO protected. On arrival reset the RCBO and all held, three lights weren't working, two were lamps and one had a black scorched ballast, replaced this and all works. The circuit has eight lights, two PIRs a...
  18. P

    Am2 testing: Fault finding

    Hello everyone, I have finished my 3 years at college and now have my AM2 tomorrow. I have confident in the installation but need some help on a bit of the testing and fault finding. We will be usin a megger tester. How do I carry out PEFC and then PSSC on a three phase DB. Also could do...
  19. telectrix

    Fault finding. never trust Appearances.

    as title, just been called out to a fault, 1st floor and attic conversion no lights. arrived at the house to find as title. 1970's CU in cellar. MCB labelled cellar and upstairs lights. cellar light working. all cabling in cellar surface. top of cellar stairs is a switch. T/E and 3core/E...
  20. Adam_92

    Testing and fault finding

    Hi looking for some assistance which tests would you remove an rcbos functional earth? Isit when you do your rcd tests? And another one if anyone can help me clear this up when fault finding how would you go about splitting a ring? What would you link out at the consumer unit?

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