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cause

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  1. S

    Indicators and headlights/highbeam cause acc power to trip/short

    I was driving early thismorning when my headunit switched off every time I used the left or right indicator. As it turns out all accessory power switches off (cigarette lighter sockets). Im thinking there is a short somewhere as I also had a flat battery when I went to start my car after filling...
  2. S

    Emergency lighting fault

    So I went to a job today where the mcb kept banging out on a emergency lighting circuit but once I turned up the mcb and been turned back on! After looking, what I had found it appears most the emergency light fittings lamp were nearly black and one had blown completely, as I went to check some...
  3. HappyHippyDad

    What could cause my voltage to drop to 28V??

    Evening all.. I have just tested a cable that I had put in place myself for a smoke detector and I am only getting 28V L-N. I am getting 240V L-E. When I first put it in it tested 240V. Since then the builder has been in and put the ceiling up, I'm not saying this is the cause but this is the...
  4. B

    Caravan suppły RCBO

    Hi I haven't posted for a while but I'm having some issues with a caravan park I have recently carried out some work on and washoping somebody may be able to shed some light on the issue. The problem is burnt out neutrals on out going side of RCBO, we have replaced 137 caravan suppły points...
  5. T

    Shower

    Hi I would like to fit a 10.5KW shower the mcb is 45Amps doing a calculation 10.5KW @ 240V= 43.75A 10.5KW @ 230V = 45.65Amps would this be enough over current to cause nuisance tripping on a 45A breaker
  6. G

    Blairs faults

    He started world war 1 He started world war 2 He was responsible for the Miners strikes He invaded the falkland Islands He invented the Poll tax He started the American banking crises He called a police officer a pleb He started the Bedroom Tax He started the pasty tax He decided to raise...
  7. G

    A little knowledge can cause problems

    I was doing a few bits for my old chap and he was very impressed with the volt stick,so I gave him a spare and a socket tester.later on he was doing something and his mate saw the voltstick and thought it was great,now this guy is retired has loads of money and looks for any excuse to buy new...
  8. A

    Problem with a shower

    Trying to answer a question with regards a fault on an electrical shower. The question reads: A fault has occurred on an electric shower , when the shower was turned on a crackling sound was heard coming from the shower, the lights in the room then flickered and dimmed before the shower fails...
  9. W

    Cause of Pulsating lights throughout property?

    Hi, got a problem here with pulsating lights throughout a property in west London, we recently re-wired a two bedroom property in west London, and after leaving a very satisfied customer, she noticed some lights throughout the property where pulsating (dimming and regaining full brightness...
  10. B

    PIR Sensor Burn Out

    Hello, Can placing a piece of cardboard over a PIR sensor for a light cause it to burn out? I have been told that the cause of the sensor failing is the piece of card that we placed over it for a while to stop it being turned on; but I simply cannot imagine that an infrared sensor would burn...
  11. J

    Cartridge for mcb/rcd

    Hi, mrs cleaning cooker and pulled knob off to clean underneath, this fell apart and when I tried to put it back together it tripped the electrics, the fuse is an old cartridge style, just wondering if I can replace this for a mcb/rcd? It has 2 slats that run horizontal rather then vertical...
  12. C

    EICR Code

    Im currently in the middle of a Condition report and i have a defect i cant decide which code to use. The defect reads as follows: DB2/4R Water heater girls WC, 2.5mm 32A radial circuit requires downgrading to a 20A radial. C2 cause it could overheat or C3 as its never going to draw 32A down...
  13. H

    Require Training

    Hi all I am new to this forum and looking for some advice..I am currently doing the 2357 city&guild and I am close to completing the 17th edition but the trouble is I need a bit of hands on training.. I am willing to work for free jus to get a bit of training can anyone advice me what to do.. It...
  14. S

    arc in light switch

    Hi just replaced 4 existing mains downlights ina bathroom with a fan. When switching the light switch off there is occasionally a very quick spark. changed the switch still happens. The lights and fan are only drawing 1.5 amps the most or do i have to take account of the whole upstairs lighting...
  15. whinmoor

    May Cause a Surge in Interest...

    We could be about to see a new round of price hikes from the Big Six: BBC News - SSE to raise gas and electricity prices
  16. P

    what is the MOST likely cause of high resistance when testing continuity of cpc

    hi guys, what is the MOST likely cause of high resistance when testing continuity of cpc? I know likely reasons could be loose terminations, bad terminations (e.g not all wiring strands in connection), dirty connectings, ect But what would you say is the MOST likely reason for the high...
  17. D

    A first for everything, never expected this to cause a short.

    Check out the pics above; this was a callout to lost power in a factory, found 2 phases out blown 200amp fuses and a quick Meggar confirmed a short circuit between Y and B phases and unusual low readings to earth. id already isolated all outgoings and main switch was off to busbars but still...
  18. P

    IR testing - results creep up!

    Hi all Why is it that on some circuit IR testing, the results shoot up to say 250 M ohms but then creep up towards a much higher value? I know that the results are OK, I just thought it may be some damp somewhere causing the problem possibly. Do you wait for them to stop creeping up or take a...
  19. P

    What is the cause of voltage drop within an electric installation?

    hi guys, what is the cause of voltage drop within an electricinstallation?
  20. 2

    RCD tripping dilemma

    Hi all, Cam across a tripping 63A RCD, which is protecting pretty much everything in an office and even the lighting! The first guy who came out seemed to think that perhaps a spur feeding a AC unit was the culprit and proceeded to change it over, but I didn't really see the point in that. I...

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