cause

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  1. V

    A Bad 3-Way Switch Can Cause Failure of the Other?

    Can a bad 3-Way switch cause another not to work, thus preventing either switch from turning on the light? Is this always the case? Thanks
    • VFNVFN
    • Thread
    • 3-way 3-way switch another cause failure other switch
    • Replies: 4
    • Forum: Lighting Forum
  2. R

    relay cause flat battery?

    Hi, Apologies if this is the wrong place for this but want to confirm something. I have wired up a 12v lightbar on my ATV using the attached wiring loom layout, but I have been told by some that this setup will cause the battery to drain/go flat over time due to the relay always having current...
  3. Gavin John Hyde

    Trying to figure cause of tripping

    Done a CU change today, brief testing before hand I knew there was a problem on one circuit, believed to be the element in the immersion tank so put the very low IR readings down to this. Fitted new CU with plumber arranged to look at the immersion, changed it and thought that would be that...
  4. D

    Would this cause me to fail my Am2?

    hi everyone , I’ve just completed my am2 I think I did fairly well on everything the only thing that’s bugging me is, on my shedual of test results I’m sure I put the wrong size cpc for the c/o detector circuit. I put the cpc as 1mm however I think it was 1.5 would this one thing cause me to...
  5. M

    What would cause earth short in 3PH motor?

    Have had bit of a nightmare with a job of installing a replacement 15KW extraction system motor in a workshop. The previous motor was just DOL so only one 3 core cable between the workshop and the motor which is outside, the otherside of building. The new extraction system came with...
  6. GBDamo

    Flickering LED Fault cause found, I think.

    Have had a recall on an office LED swap out. Some of the panel LEDs flicker for a fraction of a second very randomly. The panels are fed from four three phase DBs, and all the boards and all the phases have aircon(AC) supplies fed from them. Now, some of the AC units are inverted but some of...
  7. Gavin John Hyde

    Gateshead street lights cause birth defects???

    Been talking to a customer today when doing some work, He told me about this article on dailymail.... It seems the folks in gateshead reckon the street lights are causing health issues and stillbirths! Seems a bit far fetched if you ask me but i know in america there is a huge court case from...
  8. Bob Geldoff1234

    RCD tripping...not your usual cause!

    Got called out today to a tripping RCD. Quickly determined that it was the socket ring that was causing it and set about breaking the ring at the mid point and narrowing it down.Eventually got the fault in the lounge only so pulled the tv away from the wall to get to the socket.There was slug...
  9. B

    nightmare split ring

    Called out to house today"no power" front ring dead short switched ring mcb off reset board ,disconnected front grd.floor sockets 2 legs of ring and 1 spur dead short (god knows where spur is connected to ring ) solid floor 75mm approx screed beneath 20mm high quality t&g polished floor boards...
  10. D

    What could cause this?

    Hi This is a junction / isolate / led / fused box that supplies a digital shower mixer. it does not heat water, it just regulates the flow. The shower stopped working and the led was off on the switch. So i opened it to investigate. I was surprised to so so many wires. What would cause this...
  11. S

    305 on the 2365 electrical cause

    Has anyone started this module yet
  12. Gavin John Hyde

    Possible cause for a RCD to die?

    On a job today to add a couple of outdoor security lights. House is currently empty and has been for a couple months due to probate and its about to have a little bit of work done before going on market. The power was off when i got there, turned it on and the RCD is completely dead... it has...
  13. littlespark

    What can cause an invertor to trip the MCB?

    When visiting my parents, I noticed their PV invertor was showing zero W generated. On inspection, I found the MCB had tripped. Is there any reason for an invertor to trip it? Powercut, or power surge? The PV system is rated 3kW, and the MCB is 20A, type C. We checked back the history on an app...
  14. Techgenius

    Introduction cause I'm happy to be in here

    Hi Guys,I am a colledge student taking Electrical engineering in Tanzania.I am happy to be here since I know that this forum will help me increase and gain more electric knowledge.I am having a lot of difficulties in doing my assignments and homework.Hope u guys will cooperate with me and help...
  15. HVManiac

    Can 440VAC cause arc burns?

    I got electrocuted from a small industrial control transformer about 0.150kVA at 440V. I wanted to test if it was working and plugged it into a UPS 120VAC 300W just as safety to run at lower current(mostly an explosion in case I accidently shorted any leads if its on mains outlet due to large...
  16. i=p/u

    Electrical fire

    got call out to fire at property, plug top burned and cable to alarm clock all on fire , circuit on rcbo, what's going on? Dog ---- or what
  17. P

    Ring main tripped struggling to find cause

    32amp ring main tripped mcb and rcd overnight. Rcd will reset but not all the time, mcb will not reset. Unplugged everything in house and mcb still trips, but rcd ok now. 32amp ring main covers whole house and struggling to locate fault. I'm newly qualified and probably missing something obvious...
  18. B

    Seems its not just consumer units that catch fire in london

    Underground electrical faults sent flames up through manhole covers in Hackney see 'Electrical fault' causes flames to burst through manhole covers in Hackney -...
  19. i=p/u

    18v drill

    My drill started smoking (not an e-cig) any of you wise men know if carbon brushes can cause this or is the windings coating breaking down. the brushes are wore but not completely. Small springs push them in and thinking maybe not enough push onto the armature/rotor
  20. J

    something is sucking my battery down!!!!

    I put a new alternator and battery on my 99 f150 and something is still killing my battery.i just bought this truck so i decided to pull radio to check wires,there was alot of loose bare wires back there.can that cause a short and drian a battery over night?
    • jaysmooth77
    • Thread
    • battery cause check something start
    • Replies: 5
    • Forum: UK Electrical Forum

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