fault

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  1. MrGwythers

    Ev charger rccb fault

    Hello can anyone shed some light on this fault, we have a supply into 63A 100ma rccbs that feed matte for ev chargers. The rccbs keep losing a phase the first one lost L1 on rccb outgoing side, we've replaced that one now another 3 out of 5 rccb have lost L2 on all 3 faulty rccbs the first rccb...
  2. J

    EICR - Shallow Back Box Depth a Fault?

    Hello, My house has 25mm back boxes throughout, but I’ve noticed the previous owner has installed sockets and switches that seem to suggest/specify 35mm minimum. The sockets and switches do still fit flush on the wall, just that it is incredibly tight behind so the wiring has been routed...
    • JimLongDone
    • Thread
    • back box box depth eicr fault
    • Replies: 14
    • Forum: UK Electrical Forum
  3. L

    Fault finding in FICA test in scotland

    Hi. Im just about to resit my FICA test in edinburgh. Im only resitting the fault diagnosis section. Can anyone who has sat the FICA be able to give me some advice while trying trying to find the faults with the continuity buzzer you get to do it with
  4. Lainan01

    How does fault current loop? "Earth Fault Loop"

    Confused as to what the earth fault loop is. I'm aware it's the path that fault current takes (Line-Earth) but how many times does fault current "loop"?
  5. OnlQQker

    Arc Fault Detection Device!

    These are going to become the norm aren't they? I've been reading this https://electrical.----------/courses-resources-career/free-resources/consumer-guidance/arc-fault-detection-devices/ I was fixing the 21v motor on the Dyson this morning, and as usual my mind decides to wander. For years...
  6. R

    Lighting circuit trips RCD but not MCB, can’t find E-N fault

    Long shot but thought I’d try, have a lighting circuit that trips the RCD as soon as the neutral touches the neutral bar for said RCD. Bypass that and it works fine just on an MCB so would think earth-neutral fault, but doing an IR test between N and E shows as a pass (>99M ohm). So unsure of...
    • Rarbur
    • Thread
    • ausie elec circuit fault lighting lighting circuit mcb rcd trips
    • Replies: 6
    • Forum: Australia
  7. CopiamElectrical

    Ring circuit fault, High RN

    Hey there, Sorry I’ve just joined up. I’m a qualified electrician/Electrical engineer. Recently sat my 2391-52. My question is I had a fault which I couldn’t find or rectify during a periodic test that I carried out yesterday (tenant property) occupied. Circuit: Ground Floor Socket 32A...
  8. A

    Weird?! Neutral-earth fault

    Hi was recently at a property and was installing a Solar PV system. was doing my testing and i came across a weird result when doing the insulation resistance stage. testing between Neutral and earth I got a dead short. so split the circuit and narrowed it down to a 1ft long length of cable...
  9. K

    Does anyone know what RCD fault he is talking about

    Hi Basically I have visited a youtube link of another electrician and he is talking about how many electricians find RCD fault very hard to resolve and he mentioned it takes less than 3 minutes using the method he mentioned but not completely hence its really puzzling me so if anyone could...
  10. HappyHippyDad

    Ideas for finding fault area in underground swa?

    Afternoon everyone.. During some testing I have found an IR reading of 0.01MΩ between N-E. This is on a length of SWA buried underground from the main consumer unit in the house to a garage consumer unit. The poor readings are not on the outgoing circuits in the garage. There must be a join...
  11. B

    N/E fault IR=0 - RCD won’t hold

    Hi all, After some options/opinions on fault finding N/E fault on ring final as fairly newish to being out alone. Customer wants to upgrade from rewirable CU to RCBO so fairly old wiring but no signs of cable breakdown or anything totally messy on inspection. This circuit basically holds...
  12. M

    N-E fault bank holiday ruined

    Hi all , after some opinions on N-E fault or ring main. After chasing this fault and ruining my bank holiday weekend , ring main IR readings as follows L-E >999 L-N>999 N-E>0.98Mohm I have narrowed it down to a cable spurred from ring main , astonishingly the 3no. Cables in the twin...
  13. Lainan01

    Real life examples of RCD fault

    What’s a real life example of an imbalance between live and neutral? For example, a faulty tumble dryer can trip a RCD on a split board - so I would assume there is an imbalance because of the difference in the magnetic flux between the Live and Neutral coils. But what would be the actual...
  14. J

    Fault finding- AM2S. What is the pass mark for AM2s fault finding

    Fault finding- does any one know how many faults out of seven you need to find to pass the AM2S fault finding section ? any info would be helpful. Thanks
  15. HappyHippyDad

    Is 0.15M ohms N - E a fault on a cooker?

    Further to my other thread about the connected neutral. I have decided to write (politely) to the rather difficult customer and explain that I was right to indicate that the cooker was potentially dangerous. However, I thought I better check to see if it actually is! I found my results and the...
  16. D

    LV fault tripping HV ring main unit

    Hi all, I have been on a site repairing damage caused by travellers collecting copper for the last week. We have found and replaced cabling to get the site up and running. Power has been on for a few days but today the 11KV ring main unit tripped. This feeds a transformer attached to the main...
  17. J

    Reported content: Post in thread 'Domestic - RCD tripping- earth neutral fault'

    Post in thread 'Domestic - RCD tripping- earth neutral fault' by Guest has been reported by Jack898989. Reason given: Content being reported:
  18. _KaCe_

    Trouble shoot why a ground fault circuit breaker keeps tripping.

    I installed outdoor lighting and outlets. I finished this past year. I passed my inspection on April 2022. I was so pleased, BUT now the circuit the outlets are on has a problem... the circuit keeps tripping. Question 1: I was wondering if there's a way to test the circuit breaker itself? Then...
    • _KaCe_
    • Thread
    • breaker circuit circuit breaker fault ground keeps testing tripping trouble
    • Replies: 3
    • Forum: DIY Electrical Advice
  19. A

    Led strip light fault

    Hi Guys I've fitted 12m of LED strip light 9.6watt/meter which equates to 115w. I've used a 150w driver. The lights where checked before and after fitted OK but had not been on for a long period of time. They seem to be turning off by itself now having been left on for a longer time. If I turn...
  20. T

    Fault finding with a multimeter

    Hi, I’m just wondering what sort of readings I can expect for faults on a multimeter? I’ve only ever used a multifunction tester. What readings can I expect for a short cct fault or a polarity fault? I know that open cct will be 0L/1, cheers

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