failure

failure

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  1. Moley

    Transformer failure

    Have you ever wondered what happens to a big transformer when it fails? It's going to be stripped down to see what caused the failure.
  2. D

    Solaredge inverter failure

    Hi all. OK... Let me just try and clear a 1" square space on the screen inbetween all the highly intrusive ads.... On a site (NHS in fact) and they have SolarEdge inverters of which a few appear to have failed. I don't normally touch anything solar (17th edition here.... just doing 18th)...
  3. O

    Laride transformer failure query

    Hi folks I've just identified as cause of lighting circuit tripping in consumer unit a low volts ceiling light with laride transformer taking in 240V 50Hz and output 12V 60VA with load 3 LEDs rated at 2.4W/ 300mA. This unit is only a few years old and not much used. What kind of lifetime should...
  4. Atinwi

    Mystery light failure

    My bedroom light stopped working. The ceiling rose looks fine. No other lights are affected in the property and the fuses have not tripped. The bulb is fine. The light switch looks fine. Why did my light stop working?
  5. timhoward

    Wylex REC2 service isolator failure

    I had Scottish Power moving a supply this morning from one building to another so an extension could be built. I had everything ready for them with a Wylex REC2 in the meter box and I'd already run my tails. Anyway, they turned up, , ran their ducting, stuck the head in, connected up to my...
  6. R

    Failure of emergency lighting

    Gents, What is your view from this this clause from BS5266? If you have a lobby with that is part of an escape route that has one fitting, I have never seen an additional fitting being added to satisfy this clause. Even in rooms with two fittings, I have rarely seen both being used as...
  7. B

    Oven element failure

    I have an electric oven - now many years old. I have replaced the main circular 2.5kW oven element (ELEHY6708) several times over the years. Another failure happened just a couple of days ago. Soon after switching on, I noticed an unusual crackling noise from the oven. When I opened the oven...
  8. G

    ECM failure after removing TCM?

    2014 GMC Sierra 2500HD. TCM lost communication and CAN Bus and grounds were tested. TCM was required to be replaced but no longer manufactured by GM, so it was sent out for repair. While out for repair, and removed from the truck, I was chasing some other electrical issues in the cab when I...
  9. S

    My Latest Bonehead Maneuver

    I have a basic understanding of wiring from wiring switches, receptacles, etc. and I even figured out how to wire my doorbell in with my porch light successfully, but every time I try to save money by coming up with some "ingenious" workaround, it ends up costing more! With that, here is my...
  10. newfutile

    Surge protection device failure mode

    I have come across a failed SPD, I thought I would take it apart and post pics for people to discuss. It appears to work by melting an alloy or type of solder to break the connection. I guess this is after the MOV decreases its resistance and increases the current.
  11. G

    Is this a Part P failure?

    Hi all, New to the forum! Quick background on me: I have a degree in electrical engineering and spent many years working with qualified electricians on house re-wires. I never qualified as an electrician as I went down the IT route but I can rewire a house with no concerns - not that I would as...
  12. timhoward

    LED tubes failure mode

    I just wondered if anyone else has seen LED tubes do this (2 different fittings) I’m assuming this is a bad batch as this is apparently the 3rd to do this. Unfortunately testing the wiring was a little difficult due to a right rats nest installed behind two fire-trip wires that shut off the gas.
  13. R

    Headlight failure on Buick LeSabre

    In diagnosing a headlight failure, I've found that after removing the fuse and testing the voltage at the fuse socket, there is only 3VDC. The other working headlight fuse reads 12VDC. Further investigation show that the ground side of the fuse has no continuity to ground. If I put my voltmeter...
  14. S

    Premature oven lamp failure

    Hi all, Recently had to replace one of the 25w pygmy lamps in my oven, first lamp lasted around 2 weeks before it blew, I just thought its probably a dud lamp so got a new one and put it in, however it failed after only around 3 weeks. So I've had two 25w pygmy lamps fail in 5 weeks, seems...
  15. Y

    Motor failure in vvfd application

    we are using two motors 93KW 740Rpm 50hz class H motor for a spray pump application also the pump parameters are 2500m3/hr,suction 400mm,delivery 300mm required motor 96Kw,rpm 740 .At first we used star delta starters for the motors, it went on smooth operation taken load upto 145A. Then we...
  16. D

    LED lights cause appliance failure

    I installed 2 LED bulbs into my Genie garage door opener and it caused the microwave to lose power. They are both on the same circuit. When I tested the voltage at the microwave outlet it read 48 volts. That usually means a ground reference problem. Take the bulbs out and the microwave lights up...
  17. S

    Failure to operate insurance

    Hi folks. Last few years I have had to insist to my insurance broacher that I need failure to operate insurance for smoke alarms as well as the standard public liability insurance. Now they are saying all the insurers they work with specifically have a 'product failure exclusion'. I think it...
  18. A

    How to do Troubleshooting on Phase Failure ?

    I met with the following case and get stuck on how to troubleshoot and repair the following problem:- The location is a town house in a complex, with a 3 phase supply. The client has been living in this premises for 20 years. Recently ( 9 months ago) they have renovated the house and have...
  19. S

    RcD x5 failure on TT system

    Hi Guys, recently installed a new radial socket circuit from CU. When ramp testing 30ma RCD at unit, without loads, everything was fine. When I energised the circuit and tested again, the furthest two sockets failed the x5 test giving a 40ms reading. Other sockets on the same circuit came in...
  20. Neptune

    EICR Failure - lack of continuity

    Hi All, Many of you have been assisting me with a different EICR issue. Your contribution has been invaluable. This post is not related to that. I had an EICR undertaken on an installation which has a 4 year old CU with 9 circuits and RCD's. This was failed due to the following: No continuity...

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